Feedback threshold with guaranteed QoS in multiuser OFDM systems - Details

Author：

YANG, Rui-zhe (YANG, Rui-zhe.) | YUAN, Chao-wei (YUAN, Chao-wei.) | TENG, Ying-lei (TENG, Ying-lei.) | ZHANG, Yan-hua (ZHANG, Yan-hua.) (Scholars：张延华)

Indexed by：

EI Scopus CSCD

Abstract：

A　threshold　setting　scheme　is　proposed　based　on　the　resource　management　and　limited　feedback　theory　in　multiuser　orthogonal　frequency　division　multiplexing　(OFDM)　systems.　In　adaptive　resource　allocation,　the　factors　denoting　the　quality　of　service　(QoS)　and　fairness　are　both　considered　as　the　user　weight.　From　the　aspect　of　feedback　outage　probability,　the　proposed　algorithm　sets　the　threshold　for　each　user　related　to　its　weight,　which　brings　enough　feedback　to　the　user　with　greater　weight.　Analysis　and　simulation　results　show　that,　compared　with　the　threshold　ignoring　weights,　the　proposed　scheme　has　much　lower　feedback　load　while　with　better　QoS.　©　2009　The　Journal　of　China　Universities　of　Posts　and　Telecommunications.

Keyword：

Multiuser detection Orthogonal frequency division multiplexing Resource allocation Quality of service

Author Community：

[ 1 ] [YANG, Rui-zhe]School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
[ 2 ] [YUAN, Chao-wei]School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
[ 3 ] [TENG, Ying-lei]School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
[ 4 ] [ZHANG, Yan-hua]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China