Title :
Semi-Blind Joint Channel Estimation and Data Detection for Space-Time Shift Keying Systems
Author :
Chen, Sheng ; Sugiura, Shinya ; Hanzo, Lajos
Author_Institution :
Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton, UK
Abstract :
A low-complexity semi-blind joint channel estimation and data detection scheme is proposed for space-time shift keying (STSK) based multiple-input multiple-output systems. The minimum number of STSK training blocks, which is related to the number of transmitter antennas, is first utilized to provide a rough initial least square channel estimate (LSCE). Then low-complexity single-stream maximum likelihood (ML) data detection is carried out based on the initial LSCE and the detected data are employed to refine the decision-directed LSCE. It is demonstrated that a few iterations are sufficient to approach the optimal ML detection performance obtained with the perfect channel state information.
Keywords :
MIMO communication; channel estimation; least squares approximations; maximum likelihood detection; STSK; channel state information; data detection; least square channel estimate; multiple-input multiple-output systems; semiblind joint channel estimation; single-stream maximum likelihood; space-time shift keying; transmitter antennas; Bit error rate; Channel estimation; Least squares approximation; MIMO; Maximum likelihood detection; Training; Least square estimation; maximum likelihood detection; multiple-input multiple-output; space-time shift keying;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2010.2083654
