新型无线信道复用方式WSDM及其容量分析  

A new wireless division multiplexing method WSDM and capacity analysis

作　　者：曹玉凡 沈越泓[1] 袁志钢[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《电声技术》2016年第2期56-59,64,共5页Audio Engineering

基　　金：国家自然科学基金项目(61172061)

摘　　要：如何进一步高效利用无线电频谱资源,始终是无线通信领域的重要研究课题之一。无线信道统计复用(WSDM),作为一种新型无线信道复用方式,允许在无线信道上同时同频传送多路信号,从而有效提高无线电频谱的利用效率。首先介绍了基于WSDM技术的无线通信系统,并对其中的关键环节进行了简要分析。其次,运用Shannon信息理论分析了基于WSDM技术的无线通信系统的容量,理论推导得到了信道容量的闭合表达式。计算机仿真结果表明,相对于传统的时分复用(TDM)、频分复用(FDM)等复用方式,WSDM的频带利用率更高,在无线通信中具有更大的优越性。How to make further efforts to efficiently utilize the finite radio spectrum resources is one of the most important topics in the area of wireless communications all the time. As a new wireless division multiplexing method, WSDM can trans- mit multiple signals simultaneously in the same frequency band over wireless channels, which improves frequency bandwidth efficiency greatly. First, this paper introduces wireless communication system based on WSDM scheme. The important parts of this system are briefly described as well. What＇ s more, we obtain a closed-form analytical expression for the channel ca- pacity of wireless communication system using WSDM method according to Shannon information theory. Computer simulations show that WSDM method possesses higher frequency bandwidth efficiency than traditional multiplexing scheme, such as frequency division multiplexing （FDM） and time division multiplexing （TDM）.

关 键 词：无线信道统计复用 信道容量 频带利用率 

分 类 号：TN911.72[电子电信—通信与信息系统]