首页|Channel estimation in integrated radar and communication systems with power amplifier distortion

Channel estimation in integrated radar and communication systems with power amplifier distortion

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To reduce the negative impact of the power amplifier(PA)nonlinear distortion caused by the orthogonal frequency division multiplexing(OFDM)waveform with high peak-to-ave-rage power ratio(PAPR)in integrated radar and communication(RadCom)systems is studied,the channel estimation in passive sensing scenarios.Adaptive channel estimation methods are proposed based on different pilot patterns,considering nonli-near distortion and channel sparsity.The proposed methods achieve sparse channel results by manipulating the least squares(LS)frequency-domain channel estimation results to preserve the most significant taps.The decision-aided method is used to optimize the sparse channel results to reduce the effect of non-linear distortion.Numerical results show that the channel estima-tion performance of the proposed methods is better than that of the conventional methods under different pilot patterns.In addi-tion,the bit error rate performance in communication and pas-sive radar detection performance show that the proposed meth-ods have good comprehensive performance.

channel estimationintegrated radar and communi-cation(RadCom)passive sensingnonlinear distortionpower amplifier(PA)pilot pattern

LIU Yan、YI Jianxin、WAN Xianrong、RAO Yunhua、HAO Caiyong

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School of Electronic Information,Wuhan University,Wuhan 430072,China

Shenzhen Research Institute of Wuhan University,Shenzhen 518057,China

State Radio Monitoring Center of China,Shenzhen 518120,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Hubei Province of ChinaFundamental Research Funds for the Central Universities of ChinaScience and Technology Program of Shenzhen

6193101562071335622500242021CFA0022042022dx0001JCYJ20170818112037398

2024

10.23919/JSEE.2024.000053

系统工程与电子技术(英文版)
中国航天科工防御技术研究院 中国宇航学会 中国系统工程学会 中国系统仿真学会

系统工程与电子技术(英文版)

CSTPCD
影响因子：0.64
ISSN：1004-4132
年,卷(期)：2024.35(5)