Paper Info
Title
Fbl (Flexible Block-Wise Loading) Algorithm For Effective Resource Allocation In Ofdma Systems With Reduced Uplink Feedback Information
Abstract
AMC (Adaptive Modulation and Coding) is a well-known technique that selects a suitable modulation level and coding rate according to the user's channel quality. The utilization of AMC in DL (downlink) requires the DL channel information of each user to properly select the MCS (Modulation and Coding Scheme) level. However, under a practical OFDMA system environment, it is unsuitable to feed back all the channel information over the whole frequency resources due to the limited uplink bandwidth. In this paper, to optimize the performance of the AMC system we propose a FBL (Flexible Block-Wise Loading) algorithm) combined with a novel CQI (Channel Quality Information) feedback scheme with a reduced number of required bit. The proposed FBI algorithm dynamically allocates groups of sub-carriers to each user based on the channel quality information in a newly defined feedback signal format, thereby improving the sector throughput and outage probability performance.
Year
DOI
Venue
2008
10.1109/PIMRC.2008.4699530
2008 IEEE 19TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS
Keywords
Field
DocType
OFDMA, Adaptive Modulation and Coding, FBL, CQI Reduction
Link adaptation,Code rate,Computer science,Communication channel,Algorithm,Real-time computing,Bandwidth (signal processing),Throughput,Frequency-division multiple access,Orthogonal frequency-division multiplexing,Telecommunications link
Conference
Citations 
PageRank 
References 
0
0.34
4
Authors
3
Name
Order
Citations
PageRank
Taehyoung Sun100.68
Yupeng Wang2123.84
Kyunghi Chang320241.07