基于信道冲激响应不敏感特征的分子通信非相干信号检测  

Channel impulse response insensitive feature for non-coherent signal detection in molecular communication

作　　者：肖利民[1] 徐向荣 韦壮焜 刘圣涵 刘怡文[1] XIAO Limin;XU Xiangrong;WEI Zhuangkun;LIU Shenghan;LIU Yiwen(School of Computer Science and Engineering,Beihang University,Beijing 100191,China;School of Engineering,The University of Warwick,Coventry CV47AL,UK;School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京航空航天大学计算机学院,北京100191 [2]华威大学工程系,考文垂CV47AL [3]北京邮电大学信息与通信工程系,北京100876

出　　处：《通信学报》2020年第9期49-58,共10页Journal on Communications

基　　金：国家重点研发计划基金资助项目(No.2017YFB1010000);国家自然科学基金资助项目(No.61772053)。

摘　　要：为解决分子通信中由分子扩散带来的码间干扰(ISI)和背景噪声这2个严峻的挑战,采用4种能抵抗ISI的信号特征表示接收信号的瞬态特性,提出了可靠的不依赖于信道冲激响应(CIR)的非相干分子信号检测算法,并设计了自适应阈值计算方法,且给出了误比特率(BER)理论值。仿真结果显示,在同等计算复杂度下所提方案BER比传统方案BER低,因此在计算能力受限的纳米级分子通信系统中具有广泛的应用前景。To solve the inter-symbol interference(ISI)and background noise challenges of molecular communication via diffusion(MCvD),four ISI-resistant signal-features were deployed,and a reliable non-coherent signal detection algorithm,which was insensitive to different types of molecular channel impulse response(CIR),was proposed.Also,an adaptive decision threshold and theoretical bound of bit error rate(BER)were deduced.Simulation results demonstrate a lower BER of the proposed non-coherent scheme compared to the state-of-the-art schemes in the same order of computational complexity,therefore suggesting its potential applications for future nano-scale MC.

关 键 词：分子通信 码间干扰 非相干检测 特征提取 

分 类 号：TN914[电子电信—通信与信息系统]