Resource allocation and limited feedback for multimedia traffics in multiuser MIMO-OFDM systems - Details

Author：

Yang, Ruizhe (Yang, Ruizhe.) | Sun, Enchang (Sun, Enchang.) | Zhang, Jie (Zhang, Jie.) | Zhang, Yanhua (Zhang, Yanhua.) (Scholars：张延华)

Indexed by：

EI Scopus

Abstract：

The　resource　allocation　and　limited　feedback　scheme　are　proposed　in　multiuser　MIMO　OFDM　systems.　The　optimization　model　is　to　maximize　the　throughput　with　minimal　and　maximal　transmit　rate　constraint　of　users,　which　can　effectively　guarantees　the　QoS　requirment　of　multimedia　traffics.　The　resource　allocation　is　divided　into　user　selection　and　power　allocation,　realizing　the　optimization　separately.　On　the　other　hand,　to　reduce　the　feedback　load,　orthogonal　random　beamforming　is　used　to　scale　the　CDI　of　users　and　with　the　proper　thresholds,　the　necessary　quantity　of　CSI　of　users　having　lower　correlation　with　each　other　will　be　fed　back　to　support　the　resource　allocation.　Simulation　results　examine　the　validity　of　the　proposed　algorithm,　which　is　effective　and　practical.　©　2010　IEEE.

Keyword：

Gain control Multimedia systems Resource allocation MIMO systems Multipath propagation Quality of service Orthogonal frequency division multiplexing

Author Community：

[ 1 ] [Yang, Ruizhe]College of Environmental Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Sun, Enchang]College of Environmental Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zhang, Jie]College of Environmental Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Zhang, Yanhua]College of Environmental Energy Engineering, Beijing University of Technology, Beijing 100124, China