Joint feedback and scheduling scheme for service-differentiated multiuser MIMO systems

Oussama Souihli, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper considers the problem of scheduling, in closed-loop multiuser MIMO systems, a large set of users with different Quality of Service (QoS) requirements, supplied by a single base station (BS) by means of Zero-Forcing Beamforming (ZFBF). We provide a power-and-bandwidth efficient feedback scheme in which only ZFBF-optimal users feedback their CSI, thereby reducing the number of required feedbacks and the computational burden of exhaustive search for best users at the BS. Afterwards, we show that conventional sum-capacity maximizing scheduling policies fall short to meet the requisites of delay-sensitive applications, and we provide appropriate scheduling scheme for such-constrained users. Simulation results demonstrate that the proposed scheduling approach successfully meets both average and instantaneous delay constraints of delay-sensitive applications.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
DOIs
Publication statusPublished - 2009
Event2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall - Anchorage, AK, United States
Duration: 2009 Sep 202009 Sep 23

Other

Other2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall
CountryUnited States
CityAnchorage, AK
Period09/9/2009/9/23

Fingerprint

Multiuser MIMO
Differentiated Services
MIMO Systems
MIMO systems
Scheduling
Feedback
Zero-forcing
Beamforming
Base stations
Scheduling Policy
Exhaustive Search
Large Set
Closed-loop
Quality of Service
Instantaneous
Quality of service
Bandwidth
Requirements
Demonstrate
Simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

Cite this

Joint feedback and scheduling scheme for service-differentiated multiuser MIMO systems. / Souihli, Oussama; Ohtsuki, Tomoaki.

IEEE Vehicular Technology Conference. 2009. 5378985.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Souihli, O & Ohtsuki, T 2009, Joint feedback and scheduling scheme for service-differentiated multiuser MIMO systems. in IEEE Vehicular Technology Conference., 5378985, 2009 IEEE 70th Vehicular Technology Conference Fall, VTC 2009 Fall, Anchorage, AK, United States, 09/9/20. https://doi.org/10.1109/VETECF.2009.5378985
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