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

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.