抗多普勒频偏的多天线Chirp-BOK最佳随相检测方案

doi:10.11959/j.issn.1000-436x.2018122

Journal on Communications ›› 2018, Vol. 39 ›› Issue (7): 123-131.doi: 10.11959/j.issn.1000-436x.2018122

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Optimal detection of random phase signal with Doppler frequency offset in Chirp-BOK multi-antenna system

Hongbing QIU^1,²,Xinyu QIAO^1,²,Lin ZHENG^1,^2,³(),Chao YANG^1,²,Weiwei YAO^1,²,Jing ZHANG³

¹ School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China
² Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing,Guilin University of Electronic Technology,Guilin 541004,China
³ Science and Technology on Communication Networks Laboratory,Shijiazhuang 050081,China

Revised:2018-06-07 Online:2018-07-01 Published:2018-08-08
Supported by:
The National Natural Science Foundation of China(61571143);The National Natural Science Foundation of China(61371107);Guangxi Key Laboratory of Wideband Wireless Communications and Signal Processing Foundation(GXKL061501);Science and Technology on Communication Networks Laboratory Foundation(KX172600033)

Abstract

Abstract:

When there are Doppler frequency deviation and phase noise in channel,the MIMO-OFDM system with coherent detection requires complicated and accurate frequency offset estimation and Doppler compensation.Based on this,an optimal random phase detection was proposed in multi-antenna Chirp-BOK system,which improved the system capacity by space division multiplexing in the condition of anti-interference and anti-frequency deviation.The equivalent MIMO channel coefficient matrix of multi-antenna Chirp-BOK system was derived as a real matrix,so as to reduce the complexity of channel estimation and avoid to be affected by random phase.A two plus two wireless transceiver system was built on the NI USRP-2942R platform.Simulation and experiment results show that the MIMO-Chirp-BOK system inherits the advantages of low complexity,insensitivity to phase shift and frequency offset of Chirp-BOK communication system.It achieves multiplied communication capacity by increasing the number of antennas.

Key words: MIMO communication, Chirp-BOK modulation, non-coherent detection, random phase detection

CLC Number:

TN914.2

Hongbing QIU,Xinyu QIAO,Lin ZHENG,Chao YANG,Weiwei YAO,Jing ZHANG. Optimal detection of random phase signal with Doppler frequency offset in Chirp-BOK multi-antenna system[J]. Journal on Communications, 2018, 39(7): 123-131.

Figures/Tables 9

References 25

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Optimal detection of random phase signal with Doppler frequency offset in Chirp-BOK multi-antenna system

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