为解决航海雷达通信一体化信号通信效率低的问题,基于线性调频(linear frequency modulation,LFM)雷达载波信号,以极化码为信道编码方案,提出一种极化分类比特交织编码调制(polar classified bit-interleaved coded modulation,PC-BICM)算法.该算法基于信道可靠性参数将比特信道分为2类,对不同类型的信道采用不同的交织方式,以增大优比特信道间的离散度.仿真结果表明,在多种信道条件下,采用PC-BICM算法的一体化信号的误码率比随机交织信号和无交织信号的低.在高信噪比情况下,随着极化码码长的增加,一体化信号性能会优于传统的8倍扩频信号,且采用该算法的一体化信号与传统LFM信号有相同的距离分辨力.
Design and performance analysis of integrated signal for marine radar and communication based on PC-BICM
In order to solve the problem of low communication efficiency of marine radar and communication integrated signal,based on the linear frequency modulation(LFM)radar carrier signal,taking polar code as the channel coding scheme,an algorithm of polar classified bit-interleaved coded modulation(PC-BICM)is proposed.The algorithm divides the bit channels into two categories based on the channel reliability parameter,and different interleaving methods are adopted for different kinds of channels to increase the dispersion among the optimal bit channels.The simulation results show that,the bit error rate of integrated signal using PC-BICM algorithm is lower than that of random interleaving signal and non-interleaving signal under various channel conditions.In the case of high signal-to-noise ratio,as the code length of polar code increases,the performance of the integrated signal can be superior to that of the traditional 8-fold spread spectrum signal,and the integrated signal using this algorithm has the same range resolution as the traditional LFM signal.
radar and communication integrationpolar codeclassification interleavingbit error rate
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