Adaptive feedback algorithm for OFDMA systems

Sandrasegaran, K; Patachaianand, R; Madani, FM

Adaptive feedback algorithm for OFDMA systems

Sandrasegaran, K

Patachaianand, R Madani, FM

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Publication Type:: Conference Proceeding
Citation:: 2011 IEEE Wireless Communications and Networking Conference, WCNC 2011, 2011, pp. 304 - 308
Issue Date:: 2011-06-23

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Field	Value	Language
dc.contributor.author	Sandrasegaran, K https://orcid.org/0000-0003-1270-5756	en_US
dc.contributor.author	Patachaianand, R	en_US
dc.contributor.author	Madani, FM	en_US
dc.date.issued	2011-06-23	en_US
dc.identifier.citation	2011 IEEE Wireless Communications and Networking Conference, WCNC 2011, 2011, pp. 304 - 308	en_US
dc.identifier.isbn	9781612842547	en_US
dc.identifier.uri	http://hdl.handle.net/10453/19098
dc.description.abstract	In this paper, a new feedback scheme is proposed for downlink OFDMA system with frequency domain packet scheduling to achieve multiuser diversity. Recent work showed that the multiuser diversity can be gained by using the so-called average best-M feedback scheme where bit-mask indicating the identification of best M subcarriers together with the average channel quality indicator of those subcarriers are reported. It has been shown that the performance of the average best-M is highly sensitive to the choice of the M value for each number of users. In this paper, an adaptive feedback scheme in which the bit-mask of feedback subcarriers is dynamically adjusted when the number of users changes is proposed. The simulation results show that the proposed scheme achieves the same performance as the average best-M scheme when the number of feedback subcarriers is optimally selected for each number of users. © 2011 IEEE.	en_US
dc.relation.ispartof	2011 IEEE Wireless Communications and Networking Conference, WCNC 2011	en_US
dc.relation.isbasedon	10.1109/WCNC.2011.5779145	en_US
dc.title	Adaptive feedback algorithm for OFDMA systems	en_US
dc.type	Conference Proceeding
utslib.for	080201 Analysis of Algorithms and Complexity	en_US
dc.location.activity	Cancun, Mexico	en_US
dc.location.activity	Cancun, MEXICO
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CRIN - Realtime Information Networks
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US

Abstract:

In this paper, a new feedback scheme is proposed for downlink OFDMA system with frequency domain packet scheduling to achieve multiuser diversity. Recent work showed that the multiuser diversity can be gained by using the so-called average best-M feedback scheme where bit-mask indicating the identification of best M subcarriers together with the average channel quality indicator of those subcarriers are reported. It has been shown that the performance of the average best-M is highly sensitive to the choice of the M value for each number of users. In this paper, an adaptive feedback scheme in which the bit-mask of feedback subcarriers is dynamically adjusted when the number of users changes is proposed. The simulation results show that the proposed scheme achieves the same performance as the average best-M scheme when the number of feedback subcarriers is optimally selected for each number of users. © 2011 IEEE.

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http://hdl.handle.net/10453/19098