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A Novel Peak-to-Average Power Ratio Reduction Scheme via Tone Reservation in OFDM Systems 被引量:1
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作者 Jurong Bai Yong Li +2 位作者 Wei Cheng Huimin Du Yanben Wang 《China Communications》 SCIE CSCD 2017年第11期279-290,共12页
In this paper, a novel signal-to-clipping noise ratio and least squares approximation tone reservation scheme(SCR-LSA TR) is proposed to reduce the peak-to-average power ratio for orthogonal frequency division multipl... In this paper, a novel signal-to-clipping noise ratio and least squares approximation tone reservation scheme(SCR-LSA TR) is proposed to reduce the peak-to-average power ratio for orthogonal frequency division multiplexing systems. During the SCR procedure, only the element with the maximal amplitude is picked for processing, which not only decreases the algorithm complexity, but also helps to overcome the BER deterioration. With the LSA method, the amplitude of the peak-cancelling signals can approximate to that of the original clipping noise as much as possible. Through the combination of the optimization factor in the LSA method, the classic SCR method can achieve better PAPR reduction with faster convergence. Simulation results show that the proposed SCR-LSA TR scheme has less in-band distortion and smaller out-of-band spectral radiation. The BER of the proposed scheme shows a better performance especially under the 16-QAM over the additive white Gaussian noise channel. 展开更多
关键词 orthogonal frequency division multiplexing peak-to-average power ratio tone reservation signal to clipping noise ratio
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REDUCING THE PEAK-TO-AVERAGE POWER RATIO OF OFDM SYSTEM WITH LOW COMPLEXITY 被引量:2
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作者 Luo Renze Jing Longjiang +2 位作者 Luo Lang Li Jie Zhu Weile 《Journal of Electronics(China)》 2006年第1期26-28,共3页
This paper proposes a companding scheme, where small signals are enlarged and large signals are reduced, to reduce the Peak-to-Average Power Ratio(PAPR). Computer simulation results show that the proposed technique ha... This paper proposes a companding scheme, where small signals are enlarged and large signals are reduced, to reduce the Peak-to-Average Power Ratio(PAPR). Computer simulation results show that the proposed technique has two advantages at least when compared with the conventional methods such as partial transmit sequence, selective mapping and the previous companding. First, it gets better PAPR performances with a lower complexity. Second, the scheme achieves greater performances gain with hardly any damnification of OFDM signals in some degree. 展开更多
关键词 Orthogonal Frequency Division Multiplexing(OFDM) Peak-to-Average power ratio(PAPR) Compandor
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Evaluation of axial length/total corneal refractive power ratio as a potential marker for ocular diagnosis of Marfan’s syndrome in children 被引量:1
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作者 Tian-Hui Chen Ai-Zhu Miao +6 位作者 Yu-Liang Wang Min Zhang Jia-Hui Chen Jia-Lei Zheng Michael Deng Ying-Hong Ji Yong-Xiang Jiang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2021年第8期1218-1224,共7页
AIM:To investigate whether the axial length(AL)/total corneal refractive power(TCRP)ratio is a sensitive and simple factor that can be used for the early diagnosis of Marfan’s syndrome(MFS)in children.METHODS:The rel... AIM:To investigate whether the axial length(AL)/total corneal refractive power(TCRP)ratio is a sensitive and simple factor that can be used for the early diagnosis of Marfan’s syndrome(MFS)in children.METHODS:The relationship between the AL/TCRP ratio and the diagnosis of MFS for 192 eyes in 97 children were evaluate.The biological characteristics,including age,sex,AL,and TCRP,were collected from medical records.Receiver operating characteristic(ROC)curve analysis was performed to investigate whether the AL/TCRP ratio effectively distinguishes MFS from other subjects.The Youden index was used to re-divide the whole population into two groups according to an AL/TCRP ratio of 0.59.RESULTS:Of 96 subjects(mean age 7.46±3.28 y)evaluated,56(110 eyes)had a definite diagnosis of MFS in childhood based on the revised Ghent criteria,41(82 eyes)with diagnosis of congenital ectopia lentis(EL)were included as a control group.AL was negatively correlated with TCRP,with a linear regression coefficient of-0.36(R2=0.08).A significant correlation was found between age and the AL/TCRP ratio(P=0.023).ROC curve analysis showed that the AL/TCRP ratio distinguished MFS from the other patients at a threshold of 0.59.MFS patients were present in 24/58(41.38%)patients with an AL/TCRP ratio of≤0.59 and in 34/39(87.18%)patients with an AL/TCRP ratio of>0.59.CONCLUSION:An AL/TCRP ratio of>0.59 is significantly associated with the risk of MFS.The AL/TCRP ratio should be measured as a promising marker for the prognosis of children MFS.Changes in the AL/TCRP ratio should be monitored over time. 展开更多
关键词 axial length total corneal refractive power ratio DIAGNOSIS Marfan’s syndrome CHILDREN
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Simulation on Peak-to-Average Power Ratio for Orthogonal Frequency Division Multiplexing
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作者 SHAN Weifeng MENG Baohong LIU Ningning LI Hui ZHANG Hongwei 《Wuhan University Journal of Natural Sciences》 CAS 2006年第6期1873-1876,共4页
Clipping is a simple and convenient PAPR (peak-to-average power ratio) reduction method for high speed OFDM (orthogonal frequency division multiplexing) communication system. In this paper, we propose a new PAPR r... Clipping is a simple and convenient PAPR (peak-to-average power ratio) reduction method for high speed OFDM (orthogonal frequency division multiplexing) communication system. In this paper, we propose a new PAPR reduction method for Wireless-MAN(metropolitan area network)-OFDM system based on IEEE 802.16, which is over-sampling clipping arithmetic. Simulation and performance of the over-samples clipping's PAPR reduction capability, BER effect is given. The simulation indicates that the PAPR of at least 99.9% OFDM symbol is below 6dB after 2 Nyquist rate clipping, and the performance of BER has 1dB SNR(signal noise ratio) loss. The results prove that this method has better capacity to reducing PAPR. So it can be well used in WMAN-OFDM system. 展开更多
关键词 peak-to-average power ratio OFDM(orthogonal frequency divisior multiplexing) CLIPPING
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Peak-to-average power ratio reduction using selective mapping with unequal power distribution
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作者 E.S.Hassan XU Zhu +3 位作者 S.E.E1-Khamy M.I.Dessouky S.A.EI-Dolill F.E.Abd EI-Samie 《Journal of Central South University》 SCIE EI CAS 2012年第7期1902-1908,共7页
A new approach for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems was proposed.This approach is based on assigning powers to the different subcarriers of OFDM... A new approach for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems was proposed.This approach is based on assigning powers to the different subcarriers of OFDM using an unequal power distribution strategy.In addition,a reduced complexity selective mapping (RC-SLM) scheme was proposed.The proposed scheme is based on partitioning the frequency domain symbol sequence into several sub-blocks,and then each sub-block is multiplied by different phase sequences whose length is shorter than that used in the conventional SLM scheme.Then,a kind of low complexity conversions is used to replace the IFFT blocks.The performance of the proposed RC-SLM scheme along with the new approach was studied with computer simulation.The obtained results show that the proposed RC-SLM scheme is able to achieve the lowest computational complexity when compared with other low complexity schemes proposed in the literature while at the same time improves the PAPR reduction performance by about 0.3 dB. 展开更多
关键词 orthogonal frequency division multiplexing (OFDM) peak-to-average power ratio (PAPR) computational complexity selective mapping scheme
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COMPLEMENT BLOCK CODING SCHEME FOR REDUCING PEAK-TO-AVERAGE POWER RATIO OF OFDM SYSTEMS
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作者 JiangTao ZhuGuangxi 《Journal of Electronics(China)》 2004年第5期413-420,共8页
A new scheme termed as Complement Block Coding (CBC) technique is proposed to reduce the Peak-to-Average Power Ratio (PAPR) of OFDM signals. Utilizing the complement bits which are added to the original information bi... A new scheme termed as Complement Block Coding (CBC) technique is proposed to reduce the Peak-to-Average Power Ratio (PAPR) of OFDM signals. Utilizing the complement bits which are added to the original information bits,this method can effectively reduce the PAPR of OFDM systems with random frame size N and the coding rate R ≤ (N - k)/N, where kis a positive integer and k ≤ N/2. The performance results obtained with CBC are given and compared with that of some well known schemes, such as Simple Block Coding (SBC), Modified Simple Block Coding (MSBC) and Simple Odd Parity Code (SOPC) for the same purpose. The results show that, at the same coding rate 3/4, the CBC can achieve almost the same performance as SBC, MSBC, but with lower complexity, and that the same performance can be obtained with higher coding rate by using CBC. At the same coding rate (N - 1)/N, the PAPR reduction of CBC is almost the twice as that of SOPC when N ≥ 16. Further more, the PAPR reductions with coding rate (N - 1)/N are almost the same as that with coding rate less than (N - 1)/N,so the proposed scheme CBC is more suitable for the large frame size with high coding rate and can provide error detection. 展开更多
关键词 Complement block coding Peak-to-Average power ratio(PAPR) OFDM PAPR reduction
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PSO-DBNet for Peak-to-Average Power Ratio Reduction Using Deep Belief Network
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作者 A.Jameer Basha M.Ramya Devi +3 位作者 S.Lokesh P.Sivaranjani D.Mansoor Hussain Venkat Padhy 《Computer Systems Science & Engineering》 SCIE EI 2023年第5期1483-1493,共11页
Data transmission through a wireless network has faced various signal problems in the past decades.The orthogonal frequency division multiplexing(OFDM)technique is widely accepted in multiple data transfer patterns at... Data transmission through a wireless network has faced various signal problems in the past decades.The orthogonal frequency division multiplexing(OFDM)technique is widely accepted in multiple data transfer patterns at various frequency bands.A recent wireless communication network uses OFDM in longterm evolution(LTE)and 5G,among others.The main problem faced by 5G wireless OFDM is distortion of transmission signals in the network.This transmission loss is called peak-to-average power ratio(PAPR).This wireless signal distortion can be reduced using various techniques.This study uses machine learning-based algorithm to solve the problem of PAPR in 5G wireless communication.Partial transmit sequence(PTS)helps in the fast transfer of data in wireless LTE.PTS is merged with deep belief neural network(DBNet)for the efficient processing of signals in wireless 5G networks.Result indicates that the proposed system outperforms other existing techniques.Therefore,PAPR reduction in OFDM by DBNet is optimized with the help of an evolutionary algorithm called particle swarm optimization.Hence,the specified design supports in improving the proposed PAPR reduction architecture. 展开更多
关键词 5G wireless network orthogonal frequency division multiplexing signal distortion peak to average power ratio partial transmit sequence deep belief network
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A correlation OPTS algorithm for reducing peak to average power ratio of FBMC-OQAM systems
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作者 WANG Xing MA Tianming +1 位作者 LI Fengrong ZHAO Qinghua 《High Technology Letters》 EI CAS 2022年第2期208-216,共9页
A correlation overlapping partial transmit sequence(C-OPTS) algorithm is proposed to solve the issue of high complexity of overlapping partial transmit sequence(OPTS) algorithm in suppressing the peak to average power... A correlation overlapping partial transmit sequence(C-OPTS) algorithm is proposed to solve the issue of high complexity of overlapping partial transmit sequence(OPTS) algorithm in suppressing the peak to average power ratio(PAPR) of filter bank multicarrier-offset quadrature amplitude modulation(FBMC-OQAM) signals.The V subblocks in partial transmit sequence(PTS) are regrouped into U combinations according to the correlation coefficient p,and overlapping subblocks are allowed between adjacent groups.The search starts from the first group and sets the phase factors of the subsequent groups to 1.When the phase factors of the non-overlapping subblocks in the first group are determined,the subsequent groups are searched in turn to determine their respective phase factors.Starting from the second data block,the data overlapped with it should be taken into account when determining its optimal phase factor vector.Theoretical analysis and simulation results indicate that compared with the OPTS algorithm,the proposed algorithm can significantly reduce the computational complexity at the cost of slight deterioration of PAPR performance.Meanwhile,compared with the even-odd iterative double-layers OPTS(ID-OPTS) algorithm,it can further reduce the complexity and obtain a better PAPR suppression effect. 展开更多
关键词 filter bank multicarrier(FBMC) offset quadrature amplitude modulation(OQAM) peak to average power ratio(PAPR) overlapping partial transmit sequence(OPTS) correlation coefficient
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A PHASE SCRAMBLING SCHEME FOR SUPPRESSION OF PEAK TO AVERAGE POWER RATIO FOR OFDM
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作者 LiuYang ShiYin 《Journal of Electronics(China)》 2005年第1期66-69,共4页
The complex-valued modulating vectors for the subcarriers consist of two kinds of components: One is the information-bearing components superposed with pseudo-randomized phases and the other is the suppression compone... The complex-valued modulating vectors for the subcarriers consist of two kinds of components: One is the information-bearing components superposed with pseudo-randomized phases and the other is the suppression components with specified scrambling phases. The pseudo randomized phases are generated according to the predefined polynomial and mapping function whereas the scrambling phases are from a gradient algorithm. The simulation results verify the rationality and validity of the phase scrambling. 展开更多
关键词 Orthogonal Frequency Division Multiplexing (OFDM) Peak to Average power ratio (PAPR) Phase scrambling scheme
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Joint Optimization of Peak-to-Average Power Ratio and Spectral Leakage in 5G Multicarrier Waveforms
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作者 WEI Peng DAN Lilin +3 位作者 ZHOU Cheng XIAO Yue WU Gang LI Shaoqian 《China Communications》 SCIE CSCD 2015年第S1期83-92,共10页
High peak-to-average-power ratio(PAPR) and spectral leakage are two main drawbacks of multicarrier systems, such as in orthogonal frequency division multiplexing(OFDM), in future 5G wireless communications. For genera... High peak-to-average-power ratio(PAPR) and spectral leakage are two main drawbacks of multicarrier systems, such as in orthogonal frequency division multiplexing(OFDM), in future 5G wireless communications. For generating optimized wave forms for 5G communications, this paper proposes an iterative scheme combining time-domain N-continuous OFDM(TD-NC-OFDM) and serial peak cancellation(SPC). Based on the theory of projection onto convex sets(POCS), the effectiveness of the proposed scheme is proved, and the optimized time-frequency domain multicarrier waveforms are analyzed in terms of a balanced tradeoff between out-of-band spectral leakage and PAPR. Both theoretical analysis and simulation results show that the proposed scheme can jointly optimize both the PAPR and out-ofband radiation, with moderate computational complexity. 展开更多
关键词 orthogonal frequency division multiplexing(OFDM) peak-to-average-power ratio(PAPR) SPECTRAL LEAKAGE
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Power Ratio Gain Technique and General Integral Control
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作者 Baishun Liu 《Applied Mathematics》 2015年第4期663-669,共7页
In conjunction with general integral control, and synthesizing Singular perturbation and Equal ratio gain techniques, this paper proposes a new control design technique, named Power ratio gain technique, and then by L... In conjunction with general integral control, and synthesizing Singular perturbation and Equal ratio gain techniques, this paper proposes a new control design technique, named Power ratio gain technique, and then by Lyapunov method, theorem to ensure regionally as well as semi-globally asymptotic stability is established in terms of some bounded information. The highlight point is that it not only inherits all the essences of Singular perturbation and Equal ratio gain techniques but also makes up for their shortcomings, and then the conservatism of control input can be improved by compromising the Power ratio coefficients. Theoretical analysis, design example and simulation results show that Power ratio gain technique is a simple, practical and powerful tool to deal with the uncertain nonlinear system. 展开更多
关键词 GENERAL Integral CONTROL Nonlinear CONTROL Robust CONTROL Equal ratio GAIN TECHNIQUE SINGULAR Perturbation TECHNIQUE power ratio GAIN TECHNIQUE Output Regulation
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Reducing Peak-to-Average Power Ratio of a Turbo Coded OFDM
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作者 Spyridon K. Chronopoulos Vasilis Christofilakis +1 位作者 Giorgos Tatsis Panos Kostarakis 《Wireless Engineering and Technology》 2012年第4期195-202,共8页
Peak to Average Power Ratio (PAPR) is defined as the instantaneous power (maximum value) to the average power ratio. PAPR is considered to be a major problem in OFDM systems. This problem can cause radical unexpected ... Peak to Average Power Ratio (PAPR) is defined as the instantaneous power (maximum value) to the average power ratio. PAPR is considered to be a major problem in OFDM systems. This problem can cause radical unexpected behavior of the signal fluctuation. This fluctuation is constituted by a large number of power states. The enormous number of these states leads to an additional complexity of ADCs and DACs. This research addresses the previous problem in OFDM systems utilizing Turbo Codes. μLaCP technique is employed for the purpose of decreasing PAPR. Moreover, our OFDM system was simulated in the presence of an AWGN channel with four types of codes (without the presence of ADCs and DACs). These were constituted of PCCC (typical and new), SCCC, and Convolutional Codes. Our Turbo Coded OFDM exhibited unchanged BER performance before and after the use of μLaCP technique. This was accomplished by modifying our previous PAPR reduction technique without sacrificing greatly its attributes. 展开更多
关键词 Orthogonal Frequency Division Multiplexing PEAK to Average power ratio μ-Law μLaCP μLaIF Parallel CONCATENATED Convolutional Codes A POSTERIORI Probability Cyclic PREFIX Zero PADDING PEAK ratio Bit Error Rate
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Inter-antenna and subblock shifting and inversion for peak-to-average power ratio reduction in MIMO-OFDM systems 被引量:2
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作者 WANG Yi TAO Xiao-feng 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2007年第4期41-45,共5页
In this article, an inter-antenna inter-subblock shifting and inversion (IASSI) scheme is proposed to reduce the peak-to-average power ratio (PAPR) in multi-input multioutput orthogonal frequency division multiple... In this article, an inter-antenna inter-subblock shifting and inversion (IASSI) scheme is proposed to reduce the peak-to-average power ratio (PAPR) in multi-input multioutput orthogonal frequency division multiplexing (MIMO- OFDM) systems. It exploits multiple antennas and subblocks to provide additional degrees of freedom to benefit the system. To reduce the implementation complexity of the proposed scheme, two simple suboptimal schemes are further presented based on the minimum current maximum criterion; one adopts sequential search and the other employs random binary grouping. The simulation results exhibit the effectiveness of these proposed schemes. 展开更多
关键词 peak-to-average power ratio inter-antenna and subblock shifting and inversion sequential search randombinary grouping multi-input multi-output orthogonal frequencydivision multiplexing
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Spectrally flat supercontinuum generation in a holmium-doped ZBLAN fiber with record power ratio beyond 3μm 被引量:4
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作者 LINYONG YANG BIN ZHANG +3 位作者 KE YIN TIANYI Wu YIJUN ZHAO JING Hou 《Photonics Research》 SCIE EI 2018年第5期417-421,共5页
A spectrally flat mid-infrared supercontinuum(MIR-SC) spanning 2.8–3.9 μm with a maximum output power of 411 mW was generated in a holmium-doped ZBLAN fiber amplifier(HDZFA). A broadband fiber-based SC covering the ... A spectrally flat mid-infrared supercontinuum(MIR-SC) spanning 2.8–3.9 μm with a maximum output power of 411 mW was generated in a holmium-doped ZBLAN fiber amplifier(HDZFA). A broadband fiber-based SC covering the 2.4–3.2 μm region was designed to seed the amplifier. Benefiting from the broadband seed laser,the obtained SC had a high spectral flatness of 3 dB over the range of 2.93–3.70 μm(770 nm). A spectral integral showed that the SC power beyond 3 μm was 372 mW, i.e., a power ratio of 90.6% of the total power. This paper,to the best of our knowledge, not only demonstrates the first spectrally flat MIR-SC directly generated in fluoride fiber amplifiers, but also reports the highest power ratio beyond 3 μm obtained in rare-earth-doped fluoride fiber until now. 展开更多
关键词 Spectrally flat supercontinuum generation a holmium-doped ZBLAN fiber with record power ratio beyond 3μm
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Optimized Pump Power Ratio on 2nd Order Pumping Discrete Raman Amplifier
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作者 Renxiang Huang Youichi Akasaka +1 位作者 David L. Harris James Pan 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期415-416,共2页
By optimizing pump power ratio between 1st order backward pump and 2nd order forward pump on discrete Raman amplifier, we demonstrated over 2dB noise figure improvement without excessive non-linearity degradation.
关键词 RIN high for in of NF EDFA Optimized Pump power ratio on 2nd Order Pumping Discrete Raman Amplifier that length THAN
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Efficient nonlinear companding scheme for substantial reduction in peak-to-average power ratio of OFDM
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作者 Kasun Bandara Atul Sewaiwar Yeon-Ho Chung 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2015年第5期924-931,共8页
Orthogonal frequency division multiplexing(OFDM)produces a high peak-to-average power ratio(PAPR) that adversely affects high-speed OFDM data transmission. In order to reduce the high PAPR, an efficient nonlinear comp... Orthogonal frequency division multiplexing(OFDM)produces a high peak-to-average power ratio(PAPR) that adversely affects high-speed OFDM data transmission. In order to reduce the high PAPR, an efficient nonlinear companding transform(NCT) function is proposed. With the proposed NCT function,the compression and expansion weights can be applied independently with suitably chosen function parameter values. As a result, the proposed function can easily maintain the average signal power approximately unchanged during the companding process.In this regard, the proposed function is superior to previously proposed schemes. Also, the simulations show the outstanding PAPR reduction performance of the proposed function. It is demonstrated that the proposed scheme performs well with nonlinear transmitter amplifiers and delivers superior error performance, compared with error function and exponential function based schemes. 展开更多
关键词 COMPANDING orthogonal frequency division multiplex-ing (OFDM) peak-to-average power ratio (PAPR)
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A Consideration on Increasing Current Density in Normal Conducting Toroidal Field Coil for Spherical Tokamak Power Plant
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作者 宋云涛 西尾敏 《Plasma Science and Technology》 SCIE EI CAS CSCD 2005年第2期2731-2733,共3页
The center post is the most critical component as an inboard part of the toroidal field coil for the low aspect ratio tokamak. During the discharge it endures not only a tremendous ohmic heating owing to its carrying ... The center post is the most critical component as an inboard part of the toroidal field coil for the low aspect ratio tokamak. During the discharge it endures not only a tremendous ohmic heating owing to its carrying a rather high current but also a large nuclear heating and irradiation owing to the plasma operation. All the severe operating conditions, including the structure stress intensity and the stability of the structure, largely limit the maximum allowable current density. But in order to contain a very high dense plasma, it is hoped that the fusion power plant system can operate with a much high maximum magnetic field BT ≥12 T-15 T in the center post. A new method is presented in this paper to improve the maximum magnetic field up to 17 T and to investigate the possibility of the normal conducting center post to be used in the future fusion tokamak power plant. 展开更多
关键词 low aspect ratio tokamak power plant toroidal field coil center post high magnetic field
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GAS AND OIL POWER DISTRIBUTION RATIO OF A NEW HYDRAULIC BREAKER
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作者 ZHAO Hongqiang LI Meixiang GAO Bin HE Qinghua 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2007年第5期54-58,共5页
The working principle of a new hydraulic breaker operated jointly by gas and hydraulic flow which has a reasonable structure, high efficiency and long piston life-span, is analyzed, and the optimal power distribution ... The working principle of a new hydraulic breaker operated jointly by gas and hydraulic flow which has a reasonable structure, high efficiency and long piston life-span, is analyzed, and the optimal power distribution ratio of the sealed nitrogen gas to the high-pressure oil in the process of piston impacting is studied. Through theoretical analysis, optimization simulation and detailed calculation, it is determined that the impact system has optimal mechanical performance and highest efficiency when the distribution ratio φ is between 0.3 and 0.5. The theoretical result is also verified by repeated tests. 展开更多
关键词 Hydraulic breaker power Distribution ratio Efficiency
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Output-feedback Stabilization for Stochastic High-order Nonlinear Systems with a Ratio of Odd Integers Power 被引量:4
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作者 LIU Liang DUAN Na XIE Xue-Jun 《自动化学报》 EI CSCD 北大核心 2010年第6期858-864,共7页
关键词 反馈系统 稳定性 自动化 研究
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Degradation of effective carrier-power-to-noise densityratio based on code trackingspectral sensitivitycoefficient for GNSS radio frequencycompatibilityin C band
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作者 刘美红 战兴群 牛满仓 《Journal of Beijing Institute of Technology》 EI CAS 2014年第3期413-419,共7页
The frequency band between 5 010 MHz and 5 030 MHz allocated as C band has been used as a candidate in the global navigation satellite systems (GNSS) along with more and more naviga- tion services in L band. The pot... The frequency band between 5 010 MHz and 5 030 MHz allocated as C band has been used as a candidate in the global navigation satellite systems (GNSS) along with more and more naviga- tion services in L band. The potential benefits and technical requirements of C band for satellite navi- gation have been analyzed before. However the degradation of effective carrier-power-to-noise densi- ty ratio( A (C/No )eu) based on code tracking spectral sensitivity coefficient( CT_SSC ) as a compati- bility assessment methodology for potential GNSS radio frequency compatibility in C-Band has not been discussed clearly. So the compatibility of the signals in the C band between BeiDou (BD) B1 C and GPS L1C, L1C/A, Galileo E1Os as the interoperability or classical signals in L band is analyzed. Simulation results reveal the interference degree between BD III B1C and GPS L1C/A, L1C, Galileo E1OS. The results can also reveal that the multiplexed binary offset carrier (MBOC) and binary phase shift keying (BPSK) modulation is not appropriate for C band. 展开更多
关键词 degradation of effective carrier-power-to-noise density ratio code tracking spectral sen-sitivity coefficient compatibility
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