Distribution Decomposition and Sum-Capacity Results of Two-User Optical Intensity Multiple Access Channels

作     者：Li, Longguang Chen, Ru-Han Zhou, Jing 

作者机构：East China Normal University Department of Communication and Electronic Engineering Shanghai200062 China Sixty-Third Research Institute National University of Defense Technology Nanjing210044 China Shaoxing University Department of Computer Science and Engineering Shaoxing312010 China 

出 版 物：《IEEE Transactions on Information Theory》 (IEEE Trans. Inf. Theory)

年 卷 期：2023年第69卷第9期

页      面：5532-5549页

核心收录：

学科分类：0810[工学-信息与通信工程] 070207[理学-光学] 0808[工学-电气工程] 08[工学] 0702[理学-物理学] 

基　　金：This work was supported in part by the National Natural Science Foundation of China under Grant 62071489 and in part by the Shanghai Sailing Program under Grant 21YF1411000 

主　　题：Gaussian noise (electronic) 

摘      要：This paper investigates the sum-capacity of two-user optical intensity multiple access channels with per-user peak- or/and average-intensity constraints. By leveraging tools from the decomposition of certain distributions, we derive several lower bounds on the sum-capacity. In the high signal-to-noise ratio (SNR) regime, some bounds asymptotically match or approach the sum-capacity, thus closing or reducing the existing gaps to the high-SNR asymptotic sum-capacity. At moderate SNR, some bounds are also fairly close to the sum-capacity. © 1963-2012 IEEE.