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Multi-hop Relay System for Multicast and Broadcast Service over Mobile WiMAX  

Cho, Chi-Hyun (성균관대학교 전기전자컴퓨터공학과)
Youn, Hee-Yong (성균관대학교 전기전자컴퓨터공학과)
Publication Information
Journal of KIISE:Information Networking / v.35, no.3, 2008 , pp. 227-234 More about this Journal
Abstract
The development of wireless network technology allows high data rate seamless communication irrespective of the place and time in various emerging mobile service environment. Unlike wired networks, however, wireless networks utilize expensive limited bandwidth. MBS(Multicast Broadcast Service), which is supported by mobile WiMAX system based on IEEE802.16e, overcomes this problem using a shared downlink channel for efficiently supporting a number of users. However. the coverage and throughput of the system are significantly affected by the channel condition. In this paper we propose on MBS system employing Mobile Multi-Hop Relay(MMR) and adaptive modulation and coding(AMC) scheme. The result of NS-2 computer simulation shows that the throughput and transmission time are substantially improved by the proposed approach compared to the existing MBS system.
Keywords
Adaptive modulation and coding; Mobile multi-hop relay; Mobile WiMAX; Multicast broadcast service; Spectrum-efficiency;
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