In this paper,the performance of uplink multiuser massive multiple-input multipleoutput(MIMO)system with spatial modulation over transmit-correlated Rayleigh fading channel is investigated,where a large number of ante...In this paper,the performance of uplink multiuser massive multiple-input multipleoutput(MIMO)system with spatial modulation over transmit-correlated Rayleigh fading channel is investigated,where a large number of antennas are deployed at the base station and linear zero-forcing(ZF)receiver is employed for detection.By taking the transmit correlation and the randomness of shadow fading in to account,the bit error rate(BER)performance of the system is analyzed.According to the performance analysis,an approximated expression of overall average BER of the system is attained.Besides,asymptotic performance is studied and the corresponding BER expression at high signal-to-noise ratio is derived.On this basis,the diversity gain of the system can be obtained for performance evaluation.Simulation results show that the derived theoretical expressions match the simulated values well,which verifies the correctness of our analysis.展开更多
The demand for wireless spectrum and data transmission has increased dramatically with the rapid growth of deepspace exploration and communication.The satellite relay communication is an essential technique to solve t...The demand for wireless spectrum and data transmission has increased dramatically with the rapid growth of deepspace exploration and communication.The satellite relay communication is an essential technique to solve the issues above.The method of combining Physical-layer Network Coding(PNC)with Continuous Phase Modulation(CPM)on relay satellites can improve communication efficiency and perform the collection and transmission of space data effectively.Partial-Response CPM(PR-CPM)signals possess excellent spectrum and power characteristics and are suitable for deep-space communications with limited bandwidth and massive data transmission.In this paper,a partial response non-coherent multi-symbol detection algorithm is proposed based on the Maximum-Likelihood principle.The proposed algorithm fully utilizes the memory properties of PR-CPM signals and makes decisions on specified symbols by observing a number of symbols each time.Simulation results indicate that the performance gain under the Bit Error Rate of 10-4 is about 2 dB when 5 symbols are inspected,compared with the case where the observation length is 3.展开更多
文摘In this paper,the performance of uplink multiuser massive multiple-input multipleoutput(MIMO)system with spatial modulation over transmit-correlated Rayleigh fading channel is investigated,where a large number of antennas are deployed at the base station and linear zero-forcing(ZF)receiver is employed for detection.By taking the transmit correlation and the randomness of shadow fading in to account,the bit error rate(BER)performance of the system is analyzed.According to the performance analysis,an approximated expression of overall average BER of the system is attained.Besides,asymptotic performance is studied and the corresponding BER expression at high signal-to-noise ratio is derived.On this basis,the diversity gain of the system can be obtained for performance evaluation.Simulation results show that the derived theoretical expressions match the simulated values well,which verifies the correctness of our analysis.
基金supported in part by the Natural Science Foundation of China under Grant 61971221,61971220the Six Talent Peaks Project in Jiangsu Province+1 种基金in part by the Fundamental Research Funds for the Central Universities of China Grant NP2020104in part by the Graduate Innovation Open Foundation of Nanjing University of Aeronautics and Astronautics under Grant kfjj20190416。
文摘The demand for wireless spectrum and data transmission has increased dramatically with the rapid growth of deepspace exploration and communication.The satellite relay communication is an essential technique to solve the issues above.The method of combining Physical-layer Network Coding(PNC)with Continuous Phase Modulation(CPM)on relay satellites can improve communication efficiency and perform the collection and transmission of space data effectively.Partial-Response CPM(PR-CPM)signals possess excellent spectrum and power characteristics and are suitable for deep-space communications with limited bandwidth and massive data transmission.In this paper,a partial response non-coherent multi-symbol detection algorithm is proposed based on the Maximum-Likelihood principle.The proposed algorithm fully utilizes the memory properties of PR-CPM signals and makes decisions on specified symbols by observing a number of symbols each time.Simulation results indicate that the performance gain under the Bit Error Rate of 10-4 is about 2 dB when 5 symbols are inspected,compared with the case where the observation length is 3.
