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FBLA (Flexible Block-wise Loading Algorithm) for Effective Resource Allocation and Reduction of the Uplink Feedback Information in OFDMA System  

Sun, Tae-Hyung (인하대학교 정보통신대학원 이동통신연구실)
Ko, Sang-Jun (인하대학교 정보통신대학원 이동통신연구실)
Chang, Kyung-Hi (인하대학교 정보통신대학원 이동통신연구실)
Hwang, Sung-Hyun (한국전자통신연구원 (ETRI) 전파방송연구단)
Song, Myung-Sun (한국전자통신연구원 (ETRI) 전파방송연구단)
Kim, Chang-Joo (한국전자통신연구원 (ETRI) 전파방송연구단)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.6A, 2007 , pp. 608-616 More about this Journal
Abstract
OFDM Systems for multi-user use adaptive modulation and ending (AMC) which is a method that selects suitable modulation order and code rate depending on channel state of each user. Using AMC, OFDM system can provide high quality and reliable communication. Base station using AMC scheme requires downlink channel information of each terminal to operate optimality. However, under practical system environment, it is unsuitable to transmit all channel information because uplink bandwidth of the system is limited. In this paper, we propose a flexible block-wise loading (FBL) algorithm combined with a novel CQI feedback scheme with reduced number of required bits to optimize the performance of AMC system. Proposed algorithm allocates sub-carrier groups dynamically to improve the sector throughput and outage probability performance.
Keywords
OFDM; FBLA; CQI Reduction; AMC;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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