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Abstract
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Article Information:
Efficient PA-SLNR Linear Precoding For Multiuser Multiple Input Multiple Output System
Elsadig Saeid, Varun Jeoti and Brahim Belhaouari Samir
Corresponding Author: Elsadig Saeid
Submitted: March 10, 2012
Accepted: March 22, 2012
Published: August 01, 2012 |
Abstract:
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In this study, linear precoding scheme for Multi-User Multiple Inputs Multiple Outputs (MU-MIMO)
system is introduced. The Proposed method optimizes Per-Antenna Signal to Leakage Plus Noise Ratio (PASLNR)
criteria and make use of Fukunaga-Koontz Transforms (FKT) computation to develop simple precoding
algorithm. However, the linear technique available in the literature so far use Per-User Signal to Leakage plus
Noise Ratio (PU-SLNR) and develop closed form precoding matrix solution based on Generalized Eigenvalue
Decomposition (GEVD), the precoding matrix computation using GEVD gives poor results at high SNR values.
Moreover, the PU-SLNR objective function neglects to take the intra-user antennas interference cancellation
into account. In this study, a new cost function based on PA-SLNR is defined, FKT based solution is explained
and novel simple algorithm is developed to compute the precoding matrices for multiple users of multiple
antennas. The developed FKT transform algorithm reduces the overall computational load by removing the
redundant computations of FKT transform factor for each receive antenna.
Key words: Fukunaga-Koontz Transform (FKT), Generalized Eigenvalue Decomposition (GEVD), Multi-User Multiple Input Multiple Output (MU-MIMO), Per-Antenna Signal to Leakage Plus Noise Ratio (PA-SLNR), precoding, ,
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Cite this Reference:
Elsadig Saeid, Varun Jeoti and Brahim Belhaouari Samir, . Efficient PA-SLNR Linear Precoding For Multiuser Multiple Input Multiple Output System. Research Journal of Applied Sciences, Engineering and Technology, (15): 2489-2495.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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