Paper Info
Title
Implementation Of A Smart Antenna System On A General-Purpose Digital Signal Processor Utilizing A Linearized Cgm
Abstract
The objective is to present a practical method of implementing a beamforming module with a general-purpose digital signal processor. The proposed module provides a beam-pattern that has its maximum gain along the direction of a target mobile subscriber using real-time processing. The new technique utilizes a modified CGM (conjugate gradient method) in such a way that the suboptimal gain vector of the array is obtained from the solution of an eigenvalue problem. The solution is carried out at every snapshot upon the arrival of a new signal vector. By decomposition at the autocorrelation matrix of the array inputs, the computational load of the conventional CGM, i.e., O(3N(2) + 12N), has been reduced significantly to the order of O(16N) in the proposed technique, where N denotes the number of antenna elements of the array. The performance of the proposed system is evaluated utilizing three different criteria; first, the execution speed for the implemented beam-former to trace the target subscriber; second, the BER (bit error rate) as a function of a given signal-to-noise ratio; and finally, the achievable capacity of the cell as a function of required BER. (C) 1997 Academic Press.
Year
DOI
Venue
1997
10.1006/dspr.1997.0284
DIGITAL SIGNAL PROCESSING
Keywords
Field
DocType
digital signal processor,conjugate gradient method,signal to noise ratio,bit error rate,smart antenna,real time processing
Conjugate gradient method,Beamforming,Mathematical optimization,Digital signal processor,Computer science,Sensor array,Autocorrelation matrix,Algorithm,Real-time computing,Smart antenna,Eigenvalues and eigenvectors,Bit error rate
Journal
Volume
Issue
ISSN
7
2
1051-2004
Citations 
PageRank 
References 
2
0.79
8
Authors
3
Name
Order
Citations
PageRank
Seungwon Choi126641.90
Hong-Min Son221.13
Sarkar, T.K.3471117.33