Paper Info
Title
Semi-blind channel estimation for a space-time system using a combined MEA-PI and auto-tracking algorithm.
Abstract
A novel semi-blind estimation scheme is proposed for an uncoded space-time system that uses a multi-element array pilot integration (MEA-PI) algorithm with Hadamard orthogonal structure combined with an auto-tracking algorithm. Central to the new method is a real-time channel estimator that introduces a very low pilot symbol overhead during the training process. The method is also capable of tracking the time variation of the channel using both the training vectors and a decision feedback algorithm during data acquisition process. As a result, a robust method of estimating the channel coefficients is possible, enabling the method to be used in real-time for a time-varying channel with a relatively short coherence time. The bit-error probability performance of this semi-blind method is investigated for different system configurations using non-linear MMSE decoding. It is found that the new method shows very little degradation in performance compared with the case where perfect channel estimates are assumed.
Year
DOI
Venue
2002
10.1109/ICASSP.2002.5745655
ICASSP
Keywords
Field
DocType
data acquisition,space time,real time
Space time,Computer science,Control theory,Data acquisition,Communication channel,Algorithm,Decoding methods,Hadamard transform,Coherence time,Estimator
Conference
Volume
ISSN
ISBN
4
1520-6149
0-7803-7402-9
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Ming Fei Siyau171.84
Richard F. Ormondroyd2143.49
Philip Nobles300.34