Skip to content

Mobile WiMAX downlink performance analysis with adaptive MIMO switching

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

Original languageEnglish
Title of host publicationIEEE Mobile WiMAX Symposium 2009, Napa Valley, California
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Publication dateJul 2009
Pages147 - 151
Number of pages5
ISBN (Print)9781424439898
DOIs
StatePublished

Conference

ConferenceIEEE Mobile WiMAX Symposium
CountryUnited States
CityNapa Valley, California
Period1/07/09 → …

Abstract

The WiMAX standard has emerged to harmonise the wide variety of Broadband Wireless Access (BWA) technologies. The recent mobile WiMAX standard (802.16e) supports broadband applications to mobile terminals and laptops in urban environments. Mobile WiMAX supports a full range of multiple-input multiple-output (MIMO) techniques including space time block coding (STBC), spatial multiplexing (SM) and eigen-beamforming (EB). This paper compares the performance of the above schemes in terms of achievable throughput and operating range. Simulated packet error rate (PER) and throughput results are presented for each MIMO technique, and for a range of modulation and coding rates. Based on a typical link-budget, the expected throughput for each scheme is computed as a function of the basestation-terminal separation distance. The paper highlights the use of Adaptive MIMO Switching (AMS) in mobile WiMAX. The SNR switching points between each MIMO mode is determined and their dependency on channel spatial correlation is demonstrated. Finally the operating range of the different MIMO schemes is determined (based on a 10% PER) for a mobile WiMAX system. The use of eigen-beamforming together with AMS is shown to offer significant performance benefits in terms of robustness, capacity and operating range. For the scenario under test, the use of eigen-beamforming (based on the dominant eigen-mode) extends the operating range by 16%, and doubles the received data rate for 65% of locations

Additional information

Rose publication type: Conference contribution Additional information: With accompanying conference presentation Terms of use: Copyright © 2009 IEEE. Reprinted from IEEE Mobile WiMAX Symposium, 2009 (MWS '09). 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

  • 802.16e, MIMO, WiMAX, AMS, beamforming

Event

IEEE Mobile WiMAX Symposium

Duration1 Jul 2009 → …
CountryUnited States
CityNapa Valley, California

Event: Conference

Documents

Documents

DOI

View research connections

Related faculties, schools or groups