Compared to OFDM systems with cyclic prefi x, fi lterbank multicarrier with offset quadrature amplitude modulation(FBMC/OQAM) system is considered as an alternative technology for next generation wireless communicatio...Compared to OFDM systems with cyclic prefi x, fi lterbank multicarrier with offset quadrature amplitude modulation(FBMC/OQAM) system is considered as an alternative technology for next generation wireless communication systems. However, FBMC systems suffer from intrinsic imaginary interference caused by the real-fi eld orthogonality destruction when passing through complex-valued fading channels. By analyzing the transmultiplexer's response of FBMC/OQAM systems, in this paper, a simple conjugated transmission scheme is proposed for FBMC/OQAM systems. Following the specific conjugation design, the intrinsic imaginary interference including the intrinsic inter-symbol and the inter-carrier interference can be eliminated at the receiver side through linear signal processing operation. Meanwhile, the proposed conjugated transmission scheme is able to obtain extra linear combination diversity gains for improving the systematic performance of FBMC/OQAM. Simulation results show that the proposed scheme is more efficient than conventional methods, especially in practical application scenarios with large Doppler spread caused by high-speed movement.展开更多
This paper presents a 10-bit 20 MS/s pipelined Analog-to- Digital Converter（ADC） using op amp sharing approach and removing Sample and Hold Amplifier（SHA） or SHA-less technique to reach the goal of low-power const...This paper presents a 10-bit 20 MS/s pipelined Analog-to- Digital Converter（ADC） using op amp sharing approach and removing Sample and Hold Amplifier（SHA） or SHA-less technique to reach the goal of low-power constanpfion. This design was fabricated in TSMC 0.18 wn 1P6M technology. Measurement results show at supply voltage of 1.8 V, a SFDR of 42.46 dB, a SNDR of 39.45 dB, an ENOB of 6.26, and a THDof41.82 dB are at 1 MHz sinusoidal sig- nal input. In addition, the DNL and INL are 1.4 LSB and 3.23 LSB respectively. The power onstmaption is 28.8 mW. The core area is 0.595 mm2 and the chip area including pads is 1.468 mm2.展开更多
To increase the passenger transferring efficiency, the bus coordination holding control for transit hubs, which is as an important dynamic dispatching method for improving the service level of transit hubs, was studie...To increase the passenger transferring efficiency, the bus coordination holding control for transit hubs, which is as an important dynamic dispatching method for improving the service level of transit hubs, was studied in the framework of bus coordination dispatching mode. Firstly, the bus coordination holding control flow was studied based on Advanced Public Transportation Systems (APTS) environment. Then a control model was presented to optimize the bus vehicle holding time, and a genetic algorithm was designed as the solving method. In the end, an example was given to illustrate the effectiveness of the control strategy and the algorithm.展开更多
基金supported by the MOST Program of International S&T Cooperation(Grant No.2016YFE0123200)National Natural Science Foundation of China(Grant No.61471100/61101090/61571082)+1 种基金Science and Technology on Electronic Information Control Laboratory(Grant No.6142105040103)Fundamental Research Funds for the Central Universities(Grant No.ZYGX2015J012/ZYGX2014Z005)
文摘Compared to OFDM systems with cyclic prefi x, fi lterbank multicarrier with offset quadrature amplitude modulation(FBMC/OQAM) system is considered as an alternative technology for next generation wireless communication systems. However, FBMC systems suffer from intrinsic imaginary interference caused by the real-fi eld orthogonality destruction when passing through complex-valued fading channels. By analyzing the transmultiplexer's response of FBMC/OQAM systems, in this paper, a simple conjugated transmission scheme is proposed for FBMC/OQAM systems. Following the specific conjugation design, the intrinsic imaginary interference including the intrinsic inter-symbol and the inter-carrier interference can be eliminated at the receiver side through linear signal processing operation. Meanwhile, the proposed conjugated transmission scheme is able to obtain extra linear combination diversity gains for improving the systematic performance of FBMC/OQAM. Simulation results show that the proposed scheme is more efficient than conventional methods, especially in practical application scenarios with large Doppler spread caused by high-speed movement.
基金provided by National Chip Implementation Center(CIC)
文摘This paper presents a 10-bit 20 MS/s pipelined Analog-to- Digital Converter（ADC） using op amp sharing approach and removing Sample and Hold Amplifier（SHA） or SHA-less technique to reach the goal of low-power constanpfion. This design was fabricated in TSMC 0.18 wn 1P6M technology. Measurement results show at supply voltage of 1.8 V, a SFDR of 42.46 dB, a SNDR of 39.45 dB, an ENOB of 6.26, and a THDof41.82 dB are at 1 MHz sinusoidal sig- nal input. In addition, the DNL and INL are 1.4 LSB and 3.23 LSB respectively. The power onstmaption is 28.8 mW. The core area is 0.595 mm2 and the chip area including pads is 1.468 mm2.
基金Sponsored by the National Natural Science Foundation of China (Grant No. 70601022)the National Basic Research Program of China (Grant No.2006CB705505)
文摘To increase the passenger transferring efficiency, the bus coordination holding control for transit hubs, which is as an important dynamic dispatching method for improving the service level of transit hubs, was studied in the framework of bus coordination dispatching mode. Firstly, the bus coordination holding control flow was studied based on Advanced Public Transportation Systems (APTS) environment. Then a control model was presented to optimize the bus vehicle holding time, and a genetic algorithm was designed as the solving method. In the end, an example was given to illustrate the effectiveness of the control strategy and the algorithm.
