NDLI: Nonredundant Precoding-Assisted Blind Channel Estimation for Single-Carrier Space–Time Block-Coded Transmission With Frequency-Domain Equalization

Content Provider	IEEE Xplore Digital Library
Author	Jwo-Yuh Wu Ta-Sung Lee
Copyright Year	1991
Abstract	Relying on nonredundant diagonal precoding and independent and identically distributed (i.i.d.) source assumption, this paper proposes a blind channel estimation scheme for single-carrier frequency-domain equalization-based space-time block coded systems. The proposed method exploits the precoding-induced linear signal structure in the conjugate cross correlation between the two temporal block received signals as well as the circulant channel matrix property and can yield exact solutions whenever the channel noise is circularly Gaussian and the receive data statistic is perfectly obtained. The channel estimation formulation builds on rearranging the set of linear equations relating the entries of conjugate cross-correlation matrix and products of channel impulse responses into one with a distinctive block-circulant with circulant-block (BCCB) structure. This allows a simple identifiability condition depending on precoder parameters alone and also provides a natural yet effective optimal precoder design framework for improving solution accuracy when imperfect data estimation occurs. We consider two models of data mismatch, from both deterministic and statistical points of view, and propose the associated design criteria. The optimization problems are formulated to take advantage of the BCCB system matrix property and are solved analytically. The proposed optimal precoder aims to optimize solution robustness against deterministic error perturbation and also minimize the mean-square error when the data mismatch is modeled as a white noise. Pairwise error probability analysis is conducted for investigating the equalization performance. Numerical examples are used to illustrate the performance of the proposed method
Sponsorship	IEEE Signal Processing Society
Starting Page	1062
Ending Page	1080
Page Count	19
File Size	1347275
File Format	PDF
ISSN	1053587X
Volume Number	55
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blind equalizers Gaussian noise Statistics Channel estimation Equations Noise robustness White noise Pairwise error probability Error analysis Performance analysis transmit diversity Blind channel estimation block-circulant matrix with circulant blocks (BCCB) circulant matrix multiple input single output (MISO) nonredundant precoders single-carrier frequency-domain equalization space–time block code (STBC)
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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