带功率捕获的随机接入算法性能分析  

Performance Analysis of Random Access Algorithm with Power Capture

作　　者：王劲松[1] 刘博[1] 周文安[1] 宋俊德[1] 

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《计算机应用研究》2006年第11期50-51,55,共3页Application Research of Computers

基　　金：国家"863"计划资助项目(2003AA12331004)

摘　　要：简要分析了时隙ALOHA算法的性能,并搭建仿真平台对其过程进行了模拟仿真。在此基础上提出基于功率捕获的随机接入方法,即基站端在检测到同一时隙多用户碰撞后仍然试图检测出冲突产生时功率较强的接入分组,并对比时隙ALOHA算法对其性能进行了仿真分析。从仿真结果可以看出,系统接入后吞吐率有了很大的提高,同时接入时延大大降低。This paper analyzes the performance of ALOHA and slotted-ALOHA at first, and then verifies the results by simulation of the access procedure. This article proposes that the higher-power access packets would be attempted to detect after the base station detecting a collision, and analyzes the performance of this algorithm comparing to slotted-ALOHA. As result of simulation, the system throughput would increase greatly, and the access delay would decrease at the same time, if the method could be applied.

关 键 词：随机接入 ALOHA 功率捕获 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]