Blind Channel Estimation for V-BLAST Coded DS-CDMA Systems in the Frequency-Selective Fading Environment

Ke DENG  Qinye YIN  Yanxing ZENG  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.3   pp.1287-1290
Publication Date: 2005/03/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.3.1287
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
V-BLAST,  channel estimation,  CDMA,  

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This letter proposes a vertical Bell Labs layered space-time (V-BLAST) coded direct-sequence code-division multiple-access (DS-CDMA) scheme in the frequency-selective fading environment and its blind channel identification algorithm. By exploiting an ESPRIT-like method and the singular value decomposition, the channels identification results are closed-form solutions. Moreover, the proposed scheme employs the precoding in the transmitter to eliminate the constraint of more receive antennas than transmit ones, required by most conventional V-BLAST codec schemes. Computer simulation results demonstrate the validity of this proposed scheme.