Differentiated MAI control for hybrid ARQ-II in CDMA networks
Wenhua Jiao, Shu Li · 2004
Multiple access interference (MAI) is a bottleneck which limits the capacity of CDMA system. Differentiated MAI control is proposed for hybrid ARQ-II of CDMA networks by noticing that successive trials of transmission have increasing error-correcting capability in hybrid ARQ-II. Data packets are classified and put into corresponding queues according to different trials of transmission. The scheduling algorithm is studied and applied to realize such control. Simulation shows that differential MAI control using weighted round robin (WRR) or deficit weighted round robin (DWRR) scheduling has significant improvement by comparison to simple MAI control for hybrid ARQ-H in CDMA networks.