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An Effective Coverage Extension Scheme for Trisector Cellular Systems using Multi-hop Relay based on IEEE 802.16j  

Yoo, Chang-Jin (고려대학교 컴퓨터정보학과)
Kim, Seung-Yeon (고려대학교 전자정보공학과)
Cho, Choong-Ho (고려대학교 컴퓨터정보학과)
Lee, Hyong-Woo (고려대학교 전자및정보공학부)
Ryu, Seung-Wan (중앙대학교 정보시스템학과)
Publication Information
Journal of KIISE:Information Networking / v.37, no.4, 2010 , pp. 294-300 More about this Journal
Abstract
In this paper, We analysis of effective coverage extension for Tri-sector cellular systems using Multi-hop Relay based on IEEE802.16j system. In the proposed international standard of IEEE 802.16j MMR (Mobile Multi-hop Relay) use of the omni-directional antenna, 3-sector and 6-sector antenna is considered to Base Station and Relay Station. Omni-directional antenna service can offer as all directions but a throughput decreases due to the signal interference of near Relay Stations. In the directional antenna, cause of an interference with the base station which it arranges an antenna so that a beam can have the direct and does with neighbor Base Station and Relay Station can be reduced interference, therefore the effective throughput is higher than the omni-directional antenna system. But, In case of Base Station and Relay Station use the directional antenna, the efficiency which the directional antenna has the Co-channel interference due to in the different cell by the channel reuse is decreased. In this study, we propose the structure of arranging the Base Station and Relay Station having the directional antenna in the NBTC, WBTC antenna in a multi-tier. It compared and analyzed with the mode that the multi-hop Relay Station has the omni-directional antenna, Relay Station are used the NBTC antenna and the WBTC antenna system also, We analyze a relation between the performance degradation and the cell coverage extension which it follows because the number of hop in the multi-hop Relay Station.
Keywords
IEEE 802.16j; Relay Station; Tri-sector; Cellular Systems; Directional antenna; Mobile Multi-hop Relay;
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