摘要
针对60 GHz脉冲无线通信系统中多径衰落引起的误码问题,提出一种适用于该系统的QCLDPC码均衡方案。在构建系统模型的基础上,通过比较几种典型的编码方法,综合误码性能及复杂度,选取QCLDPC编码作为与均衡器结合的编码方案。接收端由均衡滤波器和QCLDPC译码器两部分构成,两者通过互相交换信息使迭代结果更加可靠,可以有效消除干扰信息,提高通信质量。仿真结果表明,在误码率达到10-5时,结合QCLDPC编码的MMSE-DFE均衡系统,较未编码系统性能提升了约5.6 dB,可以满足5G热点高容量场景下高速可靠数据传输的需求,具有实际意义。
A QCLDPC code equalization scheme suitable for the 60 GHz pulse wireless communication system is proposed to solve the error code problem caused by multipath fading in the system.On the basis of constructing the system model,several typical coding methods are compared,and the bit error rate(BER)performance and complexity are combined to choose the QCLDPC encoding as the coding scheme based on equalizer.The receiver is composed of equalization filter and QCLDPC decoder,in which the two components can make the iterative result more reliable by means of information exchanging,eliminate the interference information effectively,and improve the communication quality.The simulation results show that,when the bit error rate reaches up to 10-5,the performance of the MMSE-DFE equalization system combined with QCLDPC coding is increased by about 5.6 dB than that of the uncoded system.The system can satisfy the demand of high-speed and reliable data transmission in 5G hot spot and high capacity scene,and has great practical significance.
作者
欧莹
李学华
OU Ying;LI Xuehua(School of Information and Communication Engineering,Beijing Information Science and Technology University,Beijing 100101,China)
出处
《现代电子技术》
北大核心
2018年第17期30-33,39,共5页
Modern Electronics Technique
基金
国家自然科学基金青年基金项目(61601038)~~
