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Slotted CDMA_ALOHA Protocol with Hybrid ARQ in Wireless Communication Network
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  • Slotted CDMA_ALOHA Protocol with Hybrid ARQ in Wireless Communication Network
  • Slotted CDMA_ALOHA Protocol with Hybrid ARQ in Wireless Communication Network
저자명
Lim. In-Taek
간행물명
International journal of maritime information and communication sciences
권/호정보
2007년|5권 3호|pp.194-199 (6 pages)
발행정보
한국해양정보통신학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this paper, a slotted CDMA_ALOHA protocol with hybrid ARQ is proposed for the wireless CDMA communication networks. The proposed protocol combines the characteristics of the slotted ALOHA, CDMA, and the hybrid ARQ, in order to increase the throughput by reducing the number of retransmissions when the channel experiences heavy traffic. The main feature of the proposed protocol is the utilization of the forward error correction capability to correct errors that appear after the CDMA dispreading of the packets. The base station does not need to ask so often for retransmission of erroneous packets. It will request for retransmission only when the FEC capability is exceeded. The performance of the proposed protocol is analyzed by considering the packet collision probability as well as the bit error probability. The numerical results show that the system throughput is closely related to the bit error rate of the wireless link and the FEC coding rate.