Wireless Multi-casting Scheme with OFDM Space Combining Transmission Diversity

ISE Makoto, MATSUMOTO Yoichi, UMEHIRA Masahiro

Bibliographic Information

Other Title

OFDM空間合成送信ダイバーシチを用いたワイヤレスマルチキャスト通信方式

Description

On wireless multi-cast communications, propagation condition for mobile terminals(MTs)are different each other. Though it is possible to guarantee communication quality to all MTs by retransmission control, it will degrade the system throughput performance. In this paper, we have proposed a new wireless multi-casting scheme that improves system throughput performance by focusing OFDM space combining transmission diversity effect on poor quality terminals. On our proposal, a base station classifies each terminal's communication quality by monitoring the condition on the up-link. In addition, to supply the diversity gain to the MTs with poor channels as much as possible, we have defined evaluation functions with parameters of received signal levels from the MTs. The base station selects an antenna according to the evaluation function valus carrier-by-carrier. We have also evaluated the performance of the proposed scheme by referring its unsuccessful transmission probability, and computer simulation results show that the proposed scheme is effective for the multi-cast communication.

Journal

Technical report of IEICE. DSP

Technical report of IEICE. DSP 98 (533), 33-38, 1999-01-21

The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

CRID: 1571980077369957376

NII Article ID: 110003279989

NII Book ID: AN10060786

ISSN: 09135685

Text Lang: ja

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