东南大学学报（自然科学版）2016，Vol.46Issue(5)：917-922,6.DOI:10.3969/j.issn.1001-0505.2016.05.003
两跳中继O FDMA蜂窝系统的上行链路覆盖分析
Uplink coverage analysis on two-hop relay OFDMA cellular systems
摘要
Abstract
To increase the uplink coverage of traditional OFDMA (orthogonal frequency division multiple access)cellular systems,a two-hop relay was adopted.Based on the system model of the two-hop relay cellular systems,the probability theory was applied to DF (decode-and-forward)re-lay-enhanced OFDMA systems.The closed form expressions of the model on the system coverage were obtained by mathematical calculating and a definition of the effective coverage radius was pro-posed.Assuming that users were obeyed with a uniform distribution in the cell,the coverage per-formance of single cell and multi-cells for the uplink transmission were analyzed,respectively. Then,the optimization model of the system coverage was derived,and an iterative algorithm was used to determine the optimal position of the relay station.The experimental results show that when considering the multi-cell scenario,the effective coverage radius of the two-hop relay cellular systems was significantly smaller than that of the single cell.Moreover,by selecting the appropriate parame-ters,the entire system can obtain the maximum effective coverage radius.关键词
正交频分多址接入/两跳中继/上行链路/覆盖分析Key words
OFDMA (orthogonal frequency division multiple access)/two-hop relay/uplink/cov-erage analysis分类
信息技术与安全科学引用本文复制引用
鲁蔚锋,刘江帅,杨绿溪..两跳中继O FDMA蜂窝系统的上行链路覆盖分析[J].东南大学学报（自然科学版）,2016,46(5):917-922,6.基金项目
国家自然科学基金资助项目（61372101，61201160）、江苏省高等学校优势学科建设工程资助项目（yx002001）、江苏省高校自然科学研究面上资助项目（16KJB510034）、南京邮电大学校引进人才科研启动基金资助项目（NY212012，NY214065）． （）
