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Bit and power allocation strategy for AMC-based MIMO-OFDMA WiMAX systems

Lookup NU author(s): Muayad Al-Janabi, Professor Harris Tsimenidis, Professor Bayan Sharif, Dr Stephane Le Goff

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Abstract

In this paper, we propose a bit and power allocation strategy for adaptive modulation and coding (AMC) based spatial multiplexing multi-input-multi-output (MIMO) orthogonal frequency division multiple access (OFDMA) systems. This strategy aims to maximize the average system throughput by allocating the available resources optimally among the utilized bands depending on the corresponding channel conditions and the total transmission power constraints. The average system throughput is represented as a trade-off criterion between the spectral efficiency and bit error rate (BER). The considered AMC technique utilizes distinct modulation and coding scheme (MCS) options rather than adopting fixed or uncoded approaches. The transmitter divides the OFDMA frame at each transmit antenna into bands depending on the number of active users in an assigned base station (BS). The simulation results show superior performance of the MIMO-AMC-OFDMA system, which adopts the proposed strategy, over other conventional schemes. © 2010 IEEE.

Publication metadata

Author(s): Al-Janabi M, Tsimenidis C, Sharif B, Le Goff S

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 6th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)

Year of Conference: 2010

Pages: 575-579

Publisher: IEEE

URL: http://dx.doi.org/10.1109/WIMOB.2010.5645007

DOI: 10.1109/WIMOB.2010.5645007

Library holdings: Search Newcastle University Library for this item

ISBN: 9781424477425

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