Adaptive MIMO OFDMA for future generation cellular systems in a realistic outdoor environment

C Han, A Doufexi, SMD Armour, KH Ng, JP McGeehan

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

16 Citations (Scopus)
436 Downloads (Pure)

Abstract

This paper presents a downlink performance evaluation of a candidate physical layer for future generation cellular communications systems employing link adaptive MIMO-OFDMA. Adaptation between various modulation and coding schemes in combination with both space-time block codes (STBC) and spatial multiplexing (SM) on the basis of channel knowledge is considered. By means of ray-tracing software, a detailed example coherent time-variant channel trace is generated. Subsequent application of physical layer simulation software to this channel trace yields PER and throughput results for all available link adaptation parameters. Various channel parameters are considered against this data and the SNR and H matrix determinant are found to have the most significant influences on the system throughput. Subsequently, LA algorithms are proposed whereby the system adapts according to SNR only and both SNR and H matrix determinant. The performance of these algorithms is compared to the optimal case
Translated title of the contributionAdaptive MIMO OFDMA for future generation cellular systems in a realistic outdoor environment
Original languageEnglish
Title of host publicationVehicular Technology Conference 2006 (VTC 2006-Spring), Melbourne, Australia
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages142 - 146
Number of pages5
Volume1
ISBN (Print)0780393929
DOIs
Publication statusPublished - May 2006
Event63rd Vehicular Technology Conference 2006 (VTC 2006-Spring) - Melbourne, Australia
Duration: 1 May 2006 → …

Conference

Conference63rd Vehicular Technology Conference 2006 (VTC 2006-Spring)
CountryAustralia
CityMelbourne
Period1/05/06 → …

Bibliographical note

Conference Proceedings/Title of Journal: IEEE 63rd Vehicular Technology Conference, 2006 (VTC 2006-Spring)
Conference Organiser: Vehicular Technology Society
Rose publication type: Conference contribution

Additional information: With accompanying conference poster

Sponsorship: The authors wish to acknowledge the financial support of Dorothy Hodgkin Postgraduate Awards (DHPA) and Toshiba
Research Europe Limited (TREL) and to thank Dr. Yong Sun and Dr. Magnus Sandell of TREL for their technical input

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Keywords

  • MIMO-OFDMA
  • ray tracing
  • space-time block codes
  • spatial multiplexing

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