蜂窝通信中中继双向传输技术  

Improved relay technology on cellular communication

作　　者：林文佳[1,2,3] 叶伟[4] 杨馨[1,2,3] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海无线通信研究中心,上海200335 [3]中国科学院无线传感网与通信重点实验室,上海200050 [4]华东师范大学,上海200241

出　　处：《计算机工程与设计》2010年第17期3800-3802,共3页Computer Engineering and Design

基　　金：上海市自然科学基金项目(09ZR1430700)

摘　　要：为缩短蜂窝系统中双向传输的时间,提高系统频谱利用率,提出了基于解调转发模式的双向中继传输算法。给出了双向传输的工作过程,对其进行了分析,通过两次异或还原了基站和用户的数据,进而找到提高频谱利用率的切入点,使中间节点不用解码出传输信息。给出了相应的发送和接受算法模型,进行了链路仿真。实例仿真计算结果表明,相比传统的双向传输算法,该算法具有更短的传输时间和更高的频谱利用率。To reduce the duration of bi-directional transmission and improve the system spectral efficiency,a design method of novel bi-directional transmission scheme based on demodulation-and-forward relaying mode is proposed.Firstly,the procedure of bi-directional transmission scheme is presented and analyzed.The transmission data from base station and user can be reverted by process of two times exclusive or.Hence,the entry point of improve spectral efficiency is found.With the proposed scheme,there is no need for the relay node to decode the transmission data.Moreover,the algorithm models of bi-directional transmitter and receiver are presented.It is shown by the results of the computer simulation that the proposed novel bi-directional scheme has less transmission duration and better spectral efficiency than the conventional scheme.

关 键 词：蜂窝系统 中继 频谱效率 性能 仿真 

分 类 号：TN925[电子电信—通信与信息系统]