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Type: Artigo de periódico
Title: Capacity analysis of an ARQ scheme for multimedia DS-CDMA systems
Author: de Carvalho, VR
de Almeida, C
Abstract: A multimedia DS-CDMA system using an ARQ reverse link for data transmission is proposed and analysed. The system capacity is evaluated for several error-detecting codes (EDCs) such as the Hamming codes, the Golay code, the extended Golay code and two kinds of BCH codes. A simple new model based on the asymptotic gain for block and convolutional codes is proposed. Using this asymptotic gain model, analytical expressions for the system capacity are derived, which makes the system capacity evaluation easier and faster. The proposed system allows a greater number of data users by using mon powerful block EDCs, instead of the Hamming class. The convolutional code efficiency in this system is also discussed.
Country: Inglaterra
Editor: Iee-inst Elec Eng
Rights: fechado
Identifier DOI: 10.1049/ip-com:20000574
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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