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

Hongbing QIU; Xinyu QIAO; Lin ZHENG; Chao YANG; Weiwei YAO; Jing ZHANG

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

Papers | 更新时间：2024-06-05

- Optimal detection of random phase signal with Doppler frequency offset in Chirp-BOK multi-antenna system
- Journal on Communications Vol. 39, Issue 7, Pages: 123-131(2018)
- 作者机构：
  
  1. 桂林电子科技大学信息与通信学院，广西桂林 541004
  2. 桂林电子科技大学广西无线宽带通信与信号处理重点实验室，广西桂林 541004
  3. 通信网信息传输与分发技术重点实验室，河北石家庄 050081
- 作者简介：
- 基金信息：
  
  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)
- DOI：10.11959/j.issn.1000-436x.2018122
  CLC： TN914.2
- Online First：2018-07，
  
  Published：25 July 2018
- 稿件说明：
移动端阅览
Hongbing QIU, Xinyu QIAO, Lin ZHENG, et al. 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.
DOI：

Hongbing QIU, Xinyu QIAO, Lin ZHENG, et al. 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. DOI： 10.11959/j.issn.1000-436x.2018122.

摘要

当信道存在多普勒频偏和相位噪声时，采用相干检测的 MIMO-OFDM 系统需要复杂和精确的频偏估计与多普勒补偿。为此，提出了一种多天线Chirp-BOK最佳随相检测方案，在保证抗干扰和抗频偏衰落的条件下，通过空分复用提高了系统容量。经推导，多天线Chirp-BOK系统的等效MIMO信道系数矩阵为实矩阵，从而降低了信道估计的复杂度，同时，也避免了检测受随机相位的影响。最后通过NI USRP-2942R平台搭建了2×2无线收发 MIMO-Chirp-BOK 验证系统。实测和仿真验证了所提系统具有低复杂度，对相偏、频偏不敏感的优点，并通过收发双天线获得了2倍的通信容量。

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.

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references

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