Cross-layer combining of power control and adaptive modulation with truncated ARQ for cognitive radios  

作　　者：CHENG Shi-lun YANG Zhen 

机构地区：[1]The Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China [2]China Mobile Communication Group Shandong Company Limited, Jinan Branch, Jinan 250012, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2008年第3期19-23,共5页中国邮电高校学报（英文版）

基　　金：the National Natural Science Foundation of China(60772062);the Key Projects for Science and Technology of MOE(206055);the Key Basic Research Projects for the Natural Science of Jiangsu Colleges(06KJA51001)

摘　　要：To maximize throughput and to satisfy users＇ requirements in cognitive radios, a cross-layer optimization problem combining adaptive modulation and power control at the physical layer and truncated automatic repeat request at the medium access control layer is proposed. Simulation results show the combination of power control, adaptive modulation, and truncated automatic repeat request can regulate transmitter powers and increase the total throughput effectively.To maximize throughput and to satisfy users＇ requirements in cognitive radios, a cross-layer optimization problem combining adaptive modulation and power control at the physical layer and truncated automatic repeat request at the medium access control layer is proposed. Simulation results show the combination of power control, adaptive modulation, and truncated automatic repeat request can regulate transmitter powers and increase the total throughput effectively.

关 键 词：cognitive radio truncated ARQ power control adaptive modulation cross-layer design 

分 类 号：TN92[电子电信—通信与信息系统]