|Conference||Vehicular Technology Conference 2008|
|Abbreviated title||VTC 2008-Spring|
|Period||1/05/08 → …|
This paper presents performance analysis of layered random beamforming (LRB) - MIMO-OFDMA employing various resource scheduling algorithms with feedback reduction in a realistic outdoor environment. LRB enables the exploitation of spatial multi-user diversity gain, spatial multiplexing capacity gain and layer spatial multi-user diversity gain, which is achieved by enabling the multiplex of data transmitted simultaneously to different destinations. Unlike a conventional beamforming system, an LRB system only requires an effective signal to interference and noise ratio (ESINR) based numerical data rate as feedback from every spatial layer of the MIMO channel and thus has potentially lower feedback requirements than a system which requires feedback of more detailed channel information. By combining the LRB technique with OFDMA, LRB-OFDMA can achieve an additional spectral multi-user diversity gain compared to the single carrier LRB system. Various scheduling algorithms are proposed for LRB-OFDMA and they show a trade-off between maintaining fairness and minimising delay. The performance of LRB-OFDMA is evaluated using some well-established statistical channel models as well as a propagation modeling tool, which represents a realistic outdoor environment
Name and Venue of Event: IEEE Vehicular Technology Conference, 2008 (VTC Spring 2008) , Singapore
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)
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- layered random beam forming, MIMO-OFDMA, multi-user diversity, scheduling algorithm
Vehicular Technology Conference 2008
|Abbreviated Title||VTC 2008-Spring|
|Duration||1 May 2008 → …|