东南大学学报（英文版）Issue(3)：333-338,6.DOI:10.3969/j.issn.1003-7985.2015.03.006
蜂窝网络下 D2D 通信的遍历容量分析
Ergodic capacity analysis for device-to-device communication underlaying cellular networks
摘要
Abstract
The ergodic capacity of device-to-device (D2D) communication underlaying cellular networks is analyzed. First,the D2D communication model is introduced and the interference during uplink period and downlink period is analyzed.In a D2D communication system,since it is very difficult to obtain the instantaneous channel state information (CSI),assume that only the transmitters know the statistical CSI and the channel coefficient follows an independent complex Gaussian distribution.Based on the assumptions,for the uplink period,the signal to interference plus noise ratio (SINR)of the D2D user equipments(DUEs)is expressed. Then the cumulative distribution function (CDF ) and probability distribution function (PDF)formulae of the SINR of the DUEs are presented.Based on the SINR formulae during the uplink period,the ergodic capacity formula of the uplink period is derived. Subsequently, using the same methods,the ergodic capacity formula of the downlink period is derived.The simulation results show that the DUEs can still obtain a high ergodic capacity even in the case of a large number of DUEs.This result can be applied to the design and optimization of D2D communications.关键词
D2D/遍历容量/蜂窝网Key words
device-to-device (D2D )/ergodic capacity/cellular networks分类
信息技术与安全科学引用本文复制引用
李旭杰,张洪浪,张文娜,李文峰..蜂窝网络下 D2D 通信的遍历容量分析[J].东南大学学报（英文版）,2015,(3):333-338,6.基金项目
The National Natural Science Foundation of China (No．61301110),Foundation of Shanghai Key Laboratory of Intelligent Information Processing of China (No．IIPL-2014-005)． （No．61301110）
