Title :
A MAC protocol with RCPT coded hybrid ARQ-II for CDMA networks
Author :
Jiao, Wenhua ; Li, Shu
Author_Institution :
Bell Labs Res. China, Lucent Technol., Beijing, China
Abstract :
A new multiple access protocol that combines the characteristics of hybrid ARQ error control and turbo coding is proposed and investigated. If hybrid ARQ-II with code combining is applied, retransmissions are reduced and frame error rate is lowered when the channel experiences heavy traffic. It is an adaptive optimization of the balance between the CDMA processing gain and FEC coding gain. Simulation shows that using hybrid ARQ-II with code combing in PMCAP/CDMA can improve the delay performance in AWGN channels. Code limitation strategies can decrease the multiple access interference (MAI) level and frame error rate, which in turn improves the system performance when the background noise is very high.
Keywords :
AWGN channels; access protocols; automatic repeat request; cellular radio; code division multiple access; delays; forward error correction; multiuser channels; radiofrequency interference; turbo codes; AWGN channels; CDMA networks; CDMA processing gain; FEC coding gain; MAC protocol; MAI level; PMCAP/CDMA; RCPT coded hybrid ARQ-II; adaptive optimization; background noise; cellular network; code combining; delay performance; frame error rate; hybrid ARQ error control; multiple access interference; multiple access protocol; retransmissions; simulation; system performance; traffic; turbo coding; Access protocols; Automatic repeat request; Communication system traffic control; Error analysis; Error correction; Media Access Protocol; Multiaccess communication; Multiple access interference; Traffic control; Turbo codes;
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
DOI :
10.1109/GLOCOM.2002.1188223
