Shakya, I, Ali, F H and Stipidis, E (2009) Collaborative space-time spreading scheme for higher than unity rate CDMA downlink. IET Electronic Letters, 45 (22). pp. 1129-1130. ISSN 0013-5194

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Abstract

A novel scheme referred to as collaborative space-time spreading is proposed to provide a higher than unity rate with spatial diversity gain for the downlink of a CDMA system operating in a fading channel. This is achieved by performing collaborative coding and spreading over groups of T users, each of which is assigned a single orthogonal spreading sequence and followed by space-time encoding on the total composite signal of all groups. A user terminal simply despreads the incoming signal to recover the composite T-user group data and then extracts its intended data after space-time and collaborative decoding. Extensive comparisons with other relevant schemes are provided to show the superiority of this approach.

Item Type:	Article
Schools and Departments:	School of Engineering and Informatics > Engineering and Design
Depositing User:	Indu Lal Shakya
Date Deposited:	06 Feb 2012 21:13
Last Modified:	03 Apr 2012 08:13
URI:	http://sro.sussex.ac.uk/id/eprint/30347

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