Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/22851
Citations
Scopus Web of ScienceĀ® Altmetric
?
?
Type: Journal article
Title: MMSE precoder design for diversity systems with temporal correlation
Author: White, L.
Citation: Digital Signal Processing, 2006; 16(5):607-618
Publisher: Academic Press Inc Elsevier Science
Issue Date: 2006
ISSN: 1051-2004
1095-4333
Abstract: This paper describes a numerical procedure for the design of precoders for diversity systems, where temporal correlation in the channel is present, and can be well modelled by a multichannel autoregressive process. The proposed procedure yields the class of diversity codes which minimise the greatest lower bound on the achievable channel estimation error (in the mean square sense) for any receiver. The paper describes the use matrix differential calculus to derive the Jacobian (first derivative) of the trace of the optimal (MMSE) estimation error covariance matrix with respect to the channel precoder matrix. This is used to define a gradient descent algorithm to minimise this error over all unit norm precoders. Simulation results using a previously derived per-survivor processing (PSP) based receiver illustrate the improvement gained over unitary codes. The paper shows by example that the PSP receiver attains the designed lower bound even at relatively high symbol error rates, although this design does not necessarily lead on its own to optimal symbol detection error probability performance.
Keywords: space-time codes; fading channels; Riccati equations
RMID: 0020061320
DOI: 10.1016/j.dsp.2005.02.006
Description (link): http://www.elsevier.com/wps/find/journaldescription.cws_home/622818/description#description
Appears in Collections:Electrical and Electronic Engineering publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.