Title :
Variable packet size adaptive modulation SR-ARQ scheme for Rayleigh fading channels
Author :
Junli, Wu ; Xiaolin, Hou ; Changchuan, Yin ; Guangxin, Yue
Author_Institution :
Coll. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., China
Abstract :
Conventional automatic repeat request (ARQ) schemes perform poorly in wireless fading channels. In this paper, variable packet size adaptive modulation (AM) ARQ scheme is proposed. The performance of discrete packet size AM selective repeat (SR) ARQ schemes for Rayleigh fading channels is analyzed and simple analytical expressions of its throughput are presented. The optimum switching thresholds that maximize the throughput are found. Theoretic analysis and numerical results indicate that a small number of packet sizes per modulation mode can get good performance in fading channels.
Keywords :
Rayleigh channels; adaptive modulation; automatic repeat request; Rayleigh fading channel; automatic repeat request scheme; modulation mode; selective repeat ARQ scheme; switching thresholds; variable packet size adaptive modulation SR-ARQ scheme; wireless fading channel; Adaptive systems; Automatic repeat request; Constellation diagram; Educational institutions; Error correction; Fading; Performance analysis; Strontium; Throughput; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1373904
