On the IID Capacity-Achieving Input for Binding Channels With Multiple Ligand Receptors

IEEE Access

Hui Li¹  Jianfeng Sun¹ 

[1] Key Laboratory of Wireless-Optical Communications, Chinese Academy of Sciences, School of Information Science and Technology, University of Science and Technology of China, Hefei, China;

关键词: Capacity-achieving distribution;    channel capacity;    channel models;    iterative algorithms;    molecular communication;    ligand-binding receptors;   

DOI  :  10.1109/ACCESS.2019.2931367

来源: DOAJ

【 摘 要 】

This paper studies the molecular communication system where the transmitter has limited productivity and the receiver employs ligand-binding receptors. By simplifying the release and propagation process of the information particles, the ligand-binding process is regarded as a binding channel with peak and average constraints and modeled by a finite-state Markov chain. It is proved that the capacity of the constrained independent and identically distributed (IID) binding channel, defined as the IID capacity, is achieved by a discrete input distribution. The sufficient and necessary conditions of an IID input distribution being capacity-achieving is presented. Moreover, an algorithm called modified steepest ascent cutting-plane algorithm is proposed to efficiently compute the IID capacity-achieving distributions. The numerical results show that the IID capacity is a tight lower bound of the capacity for the binding channel.

【 授权许可】

Unknown