Relay assisted uplink communication over frequency-selective channels

Based on block-orthogonal frequency division multiple access (block-OFDMA) and distributed space-time coding, we provide a novel design for a multi-user uplink communication system with fixed wireless relay stations. The relays can decode the information symbols received from the mobile users in the...

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Bibliographic Details
Published in2003 IEEE 4th Workshop on Signal Processing Advances in Wireless Communications pp. 125 - 129
Main Authors Anghel, P.A., Kaveh, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Bandwidth
Base stations
Cooperative systems
Frequency conversion
Interference
Multiaccess communication
Power system relaying
Rayleigh channels
Relays
Shadow mapping
Online AccessGet full text
ISBN9780780378582
078037858X
DOI10.1109/SPAWC.2003.1318935

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Summary:Based on block-orthogonal frequency division multiple access (block-OFDMA) and distributed space-time coding, we provide a novel design for a multi-user uplink communication system with fixed wireless relay stations. The relays can decode the information symbols received from the mobile users in the system and forward this information to the base station. We do not favor a system that enforces cooperation between users and relays at all times. We propose an adaptive scheme for a Rayleigh fading environment in which users and relays cooperate depending on the average power of the channels in the network. The proposed adaptive cooperative scheme increases the performance and the flexibility of the OFDMA uplink cellular system.
ISBN:9780780378582
078037858X
DOI:10.1109/SPAWC.2003.1318935