BLAST PERFORMANCE IN MIMO WIRELESS COMMUNICATION SYSTEMS

Byung Moo Lee and Rui J. P. de Figueiredo,
Laboratory for Intelligent Signal Processing and Communications University of California, Irvine

DOI: 10.36724/2664-066X-2022-8-1-25-29

SYNCHROINFO JOURNAL. Volume 8, Number 1 (2022). P. 25-29.

Abstract

Recently, a new detection algorithm for the Vertical Bell Laboratories Layered Space Time (V-BLAST) system, which we call Enhanced-V-BLAST, or simply E-V-BLAST, was proposed. V-BLAST has demonstrated very high spectral efficiency, there is a wide gap between the original V-BLAST algorithm and the Maximum Likelihood (ML) algorithm. Recently, some algorithms have been presented to make narrower this gap. In a new detection algorithm (Enhanced (E) V BLAST) for V-BLAST system was presented which showed significantly better performance and flexibility than the original V-BLAST detection. The E-V-BLAST algorithm gets closer to the optimum detection Maximum Likelihood (ML) algorithm by making decisions based on multiple symbols. The Enhanced (E)-V-BLAST has two parameters which can be adjusted to achieve a desired performance and complexity trade-off. In the present paper, we analyze the performance of EV-BLAST as a function of the two inherent adjustable parameters of E-V-BLAST. On the basis of this analysis, we obtain some useful characteristics of the E-V-BLAST algorithm which allow one to achieve the desired performance and complexity trade-off.

Keywords E-V-BLAST algorithm, MIMO, Wireless Communication Systems.

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