MLSE Detection with Blind Linear Prediction for Differential Space-Time Block Code Systems

Kazuhiko FUKAWA
Hiroshi SUZUKI
Satoshi SUYAMA

IEICE TRANSACTIONS on Communications   Vol.E90-B    No.4    pp.926-933
Publication Date: 2007/04/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.4.926
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
MLSE,  DSTBC,  blind signal detection,  linear prediction,  the method of Lagrange multipliers,  

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This paper proposes a maximum likelihood sequence estimation (MLSE) for the differential space-time block code (DSTBC) in cooperation with blind linear prediction (BLP) of fast frequency-flat fading channels. This method that linearly predicts the fading complex envelope derives its linear prediction coefficients by the method of Lagrange multipliers, and does not require data of decision-feedback or information on the channel parameters such as the maximum Doppler frequency in contrast to conventional ones. Computer simulations under fast fading conditions demonstrate that the proposed method with an appropriate degree of polynomial approximation is superior in BER performance to the conventional method that estimates the coefficients by the RLS algorithm using a training sequence.