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Performance Evaluation of Common Feedback Channels for Multicast Transmission and Optimization of System Parameters  

Jung, Young-Ho (한국항공대학교 항공전자및정보통신공학부)
Kim, Byung-Gun (한국항공대학교 항공전자및정보통신공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.5B, 2009 , pp. 489-497 More about this Journal
Abstract
In the 3GPP LTE and IEEE 802.16m standardizations for IMT-Advanced, the efficient transmission of multicast and broadcast data is one of the important issues to improve system performance. Especially, to guarantee each user's QoS in the multicast group, H-ARQ or adaptive modulation are considered to be adoption, however, reduction of feedback overhead is one of the most important issues. In this paper, performance of the previously proposed OOK (On-Off Keying) based common ACK/NACK feedback channel is analyzed through theoretical analysis and simulation. Based on the results, system parameter optimization methods for common feedback channel are proposed. In addition, through computer simulation, it is shown that the common feedback method according to the proposed feedback parameter optimization can feedback ACK/NACK information for multicast H-ARQ transmission, more reliably than the conventional user dedicated feedback method in 3GPP LTE systems, and can reduce the feedback overhead as well.
Keywords
H-ARO; MBMS; MBS;
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