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 contribution | Adaptive MIMO OFDMA for future generation cellular systems in a realistic outdoor environment |
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Original language | English |
Title of host publication | Vehicular Technology Conference 2006 (VTC 2006-Spring), Melbourne, Australia |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 142 - 146 |
Number of pages | 5 |
Volume | 1 |
ISBN (Print) | 0780393929 |
DOIs | |
Publication status | Published - May 2006 |
Event | 63rd Vehicular Technology Conference 2006 (VTC 2006-Spring) - Melbourne, Australia Duration: 1 May 2006 → … |
Conference
Conference | 63rd Vehicular Technology Conference 2006 (VTC 2006-Spring) |
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Country | Australia |
City | Melbourne |
Period | 1/05/06 → … |
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