Sparse Representation Based Range-Doppler Processing for Integrated OFDM Radar-Communication Networks. International Journal of Antennas and Propagation
Sparse Representation Based Range-Doppler Processing for Integrated OFDM Radar-Communication Networks. International Journal of Antennas and Propagation
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基于稀疏表示的集成 OFDM 雷达通信网络距离多普勒处理
DOI：
10.1155/2017/6528956
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发表时间：
2017
影响因子：
1.5
通讯作者：
Fuhui Zhou
中科院分区：
文献类型：
--
作者：
Bo Kong;Yuhao Wang;Henry Leung;Xiaohua Deng;Huilin Zhou;Fuhui Zhou
在综合雷达通信网络中，要求多用户接入技术具有最小的性能下降和没有距离-多普勒模糊，特别是在密集的用户环境中。针对基于正交频分复用（OFDM）的雷达通信综合网络，提出了一种基于随机子载波分配的多用户接入方案。介绍了调制符号域法结合稀疏表示法（SR）进行距离-多普勒估计的表达式，并采用并行重构算法。在占用频谱较少的情况下，提高了雷达目标检测性能。此外，利用多普勒频率检测器来降低计算复杂度。数值仿真结果表明，在理想和实际非理想情况下，该方法的性能优于传统的调制符号域方法。
In an integrated radar-communication network, multiuser access techniques with minimal performance degradation and without range-Doppler ambiguities are required, especially in a dense user environment. In this paper, a multiuser access scheme with random subcarrier allocation mechanism is proposed for orthogonal frequency division multiplexing (OFDM) based integrated radar-communication networks. The expression of modulation Symbol-Domain method combined with sparse representation (SR) for range-Doppler estimation is introduced and a parallel reconstruction algorithm is employed. The radar target detection performance is improved with less spectrum occupation. Additionally, a Doppler frequency detector is exploited to decrease the computational complexity. Numerical simulations show that the proposed method outperforms the traditional modulation Symbol-Domain method under ideal and realistic nonideal scenarios.