Title :
Performance Analysis of Quality-Based Channel State Feedback Scheme for Wireless Multicast Systems With Greedy Scheduling
Author :
In-Ho Lee ; Seok-Chul Kwon
Author_Institution :
Dept. of Electr., Electron. & Control Eng., Hankyong Nat. Univ., Anseong, South Korea
Abstract :
Multi-group multicasting has recently attracted substantial attention. In this letter, we propose quality-based channel state information feedback (QCF) in multicast systems with greedy scheduling of multiple multicast groups, and present exact expressions for outage probability and average capacity of the multicast systems using QCF over independent Rayleigh fading channels. Further, we provide a method to determine the appropriate QCF threshold, and describe the relative feedback load of QCF with respect to full channel state information feedback. Our QCF scheme can significantly reduce the feedback load, simultaneously accomplishing negligible system performance loss.
Keywords :
Rayleigh channels; greedy algorithms; multicast communication; probability; scheduling; QCF threshold; average capacity; exact expressions; feedback load reduction; greedy scheduling; independent Rayleigh fading channels; multigroup multicasting; multiple multicast groups; negligible system performance loss; outage probability; performance analysis; quality-based channel state information feedback scheme; wireless multicast systems; Capacity planning; Fading; Multicast communication; Performance analysis; Signal to noise ratio; State feedback; Wireless communication; Wireless multicast; average capacity; feedback load; outage probability; quality-based channel state feedback;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2015.2438056
