摘要
分析了AWGN(加性高斯白噪声)信道和瑞利衰落信道下无线局域网DCF(分布式协调功能)丢包率性能,推导出差错信道下使得吞吐量最大的最优分组长度闭式解并且证明了最优解的惟一性。研究结果表明,差错信道中不同调制方式和分组长度对丢包率性能有重要影响,根据信道状态调整分组长度能够获得最大的系统吞吐量。
The packet dropping probability of DCF in WLAN under AWGN and Rayleigh fading channel was analyzed. The closed form of optimum packet length maximizing the throughput under error-prone channel was derived and the uniqueness was verified. Study results show that both modulation scheme and packet length have a great effect on packet dropping probability under error-prone channel. By changing packet length according to different channel conditions, maximized throughput can be obtained.
出处
《通信学报》
EI
CSCD
北大核心
2007年第5期126-131,共6页
Journal on Communications
基金
国家自然科学基金资助项目(60572072
60496311)
国家高技术研究发展计划("863"计划)基金资助项目(2006AA01Z264
2003AA123310)
科技部国际合作重点项目(2005DFA10360)~~
