Leveraging coherent distributed space-time codes for noncoherent communication in relay networks via training

Rajan, Susinder G and Rajan, Sundar B (2009) Leveraging coherent distributed space-time codes for noncoherent communication in relay networks via training. In: IEEE Transactions On Wireless Communications, 8 (2). pp. 683-688.

PDF 12.pdf - Published Version Restricted to Registered users only Download (289kB) | Request a copy

Abstract

For point to point multiple input multiple output systems, Dayal-Brehler-Varanasi have proved that training codes achieve the same diversity order as that of the underlying coherent space time block code (STBC) if a simple minimum mean squared error estimate of the channel formed using the training part is employed for coherent detection of the underlying STBC. In this letter, a similar strategy involving a combination of training, channel estimation and detection in conjunction with existing coherent distributed STBCs is proposed for noncoherent communication in Amplify-and-Forward (AF) relay networks. Simulation results show that the proposed simple strategy outperforms distributed differential space-time coding for AF relay networks. Finally, the proposed strategy is extended to asynchronous relay networks using orthogonal frequency division multiplexing.

Item Type:	Journal Article
Publication:	IEEE Transactions On Wireless Communications
Publisher:	IEEE
Additional Information:	Copyright of this article belongs to IEEE. "YEAR IEEE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Raman Research Institute's's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it."
Keywords:	Cooperative diversity;distributed space time block code; noncoherent communication;training
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	05 Nov 2009 11:48
Last Modified:	19 Sep 2010 05:28
URI:	http://eprints.iisc.ac.in/id/eprint/19355

Actions (login required)

View Item