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“Spatial Sequence Estimator Based Decoding Algorithm for V-BLAST”

Al-Ghadhban, Samir (2004) “Spatial Sequence Estimator Based Decoding Algorithm for V-BLAST”. VTC2004-Fall. 2004 IEEE 60th, 3. pp. 1875-1879.

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Abstract

In this paper we introduce a novel detection algorithm for V-BLAST. The original V-BLAST detector is based on a serial interference cancellation (SIC) algorithm. Although the algorithm is relatively simple to implement, it does not achieve the performance predicted by theoretical analysis. The nulling operation reduces the receive diversity and the serial processing results in unequal diversity advantage for different layers. Also the error propagation severely degrades the performance. A detection algorithm for V-BLAST based on sequence estimation is proposed. The concept of maximum likelihood sequence estimation (MLSE) is applied to combat spatial interference. State reduction techniques are also considered for practical implementation. Simulation results show that the proposed algorithm outperforms interference cancellation based algorithms.



Item Type:Article
Date:September 2004
Subjects:Electrical
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Al-Ghadhban, Samir
Email:samir@kfupm.edu.sa
ID Code:1187
Deposited By:AYHAM ZAZA
Deposited On:20 Apr 2008 15:30
Last Modified:12 Apr 2011 13:08

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