摘要
研究了结合自适应调制的选择重传自动重传请求系统(AM-SR-ARQ)在Nakagami衰落信道下的性能,推导出吞吐量的一般表达式.理论分析和数值计算结果表明,结合自适应调制的ARQ系统可以对抗衰落,其吞吐量性能要优于普通的调制方式固定的ARQ系统.
The scheme of selective repeat automatic repeat request (SR-ARQ) with adaptive modulation (AM) systems was discussed. And the throughput expression was derived. Theoretic analysis and numerical calculation show that ARQ combined with AM will have a better performance than that of conventional ARQ schemes even if in different Nakagami fading channels.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2004年第3期108-112,共5页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金重大研究项目(90104018)
国家自然科学基金项目(60172052
60002009)
国家"863计划"重大研究课题(2003AA12331004)
