Skip to content

Unitary beamforming techniques enhancing VoIP call admittance capacity

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

Original languageEnglish
Title of host publicationIEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications 2010 (PIMRC 2010), Istanbul, Turkey
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Publication dateSep 2010
Pages2099 - 2104
Number of pages6
ISBN (Print)9781424480159, 9781424480173
DOIs
StatePublished

Conference

Conference21st International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
CountryTurkey
CityIstanbul
Period1/09/10 → …

Abstract

Fourth Generation Networks will invariably adopt MIMO-OFDMA techniques, in order to cope with increased data rate demands and improved Quality of Service (QoS) requirements. OFDMA is a popular multiple access candidate, since it facilitates multi-user diversity by enabling two dimensional multiple access, in time and frequency domains. Random Beamforming enables exploitation of spatial multi-user diversity and spatial capacity multiplexing gain. Layered Random Beamforming is able to achieve further multiple access benefits by enabling different users to be scheduled on different spatial layers of the same time-frequency resource. This paper examines the QoS performance of SU-MIMO and MU-MIMO precoding schemes for a VoIP system under a realistic traffic and channel environment. A novel Link Adaptation algorithm operating under PER constraints for delay sensitive VoIP traffic that promises increased data rates, flexibility and improved QoS is proposed and examined in this paper.

Additional information

Rose publication type: Conference contribution Additional information: With accompanying conference presentation Sponsorship: The authors wish to acknowledge the financial support of EPSRC and of Toshiba Research Europe Limited (TREL). Terms of use: Copyright © 2010 IEEE. Reprinted from IEEE International Symposium on Personal, Indoor and Mobile Radio Communications 2010 (PIMRC 2010). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Research areas

  • beamforming, VoIP

Event

21st International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

Duration1 Sep 2010 → …
CountryTurkey
CityIstanbul

Event: Conference

Documents

Documents

DOI

View research connections

Related faculties, schools or groups