Training-feedback tradeoff in closed-loop synchronous DS-CDMA systems with adaptive user sequences
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications（2009）
摘要
This paper considers a synchronous DS-CDMA system where channel state information at the base station is acquired via uplink training and channel feedback is used to provide the terminals with the optimal uplink signatures. We examine the tradeoffs involved in the proportioning of a resource block between training, data, and feedback symbols, with linear (matched filter and minimum mean-square error) receive processing at the BS with the user rate as the performance metric. Simulation results are presented to corroborate the analytical discussion.
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关键词
analytical discussion,feedback symbol,performance metric,optimal uplink signature,closed-loop synchronous ds-cdma system,uplink training,training-feedback tradeoff,channel feedback,resource block,minimum mean-square error,adaptive user sequence,channel state information,base station,synchronisation,code division multiple access,minimum mean square error,matched filters,downlink,mimo,spread spectrum communication,noise measurement,matched filter,signal to noise ratio,interference
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