CDMA/TDD伝送における基地局送受信ダイバーシチ方式の提案

概要

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We present a base-station-based transmission, reception diversity scheme for CDMA/TDD systems.In this paper,significant reduction in the BER resulting from the use of a hybrid diversity scheme combining the effects of transmission space diversity and path diversity for the forward link,and reception space diversity and path diversity for the reverse link,will be shown.By using transmission space diversity at the base station for the forward link,the transmission signal of a base station intended for a mobile station will always be transmitted in the best possible path,while the transmission signals from this same base station intended for other mobile stations will not always be transmitted in this same path.This scheme thus effectively improves the CIR at a mobile station.This scheme showspromise for applications in environments where path diversity gain is not sufficient,for example,microcell systems or indoor systems,without reception space diversity at mobile station.
社団法人電子情報通信学会の論文
1994-09-17