ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article A Novel Subspace Tracking Algorithm and its Application to Blind Multiuser Detection in Cellular CDMA Systems
Cited 4 time in scopus Download 0 time Share share facebook twitter linkedin kakaostory
Authors
Imran Ali, Doug Nyun Kim, Yun-Jeong Song, Naeem Zafar Azeemi
Issue Date
2010-06
Citation
Journal of Communications and Networks, v.12, no.3, pp.216-221
ISSN
1229-2370
Publisher
한국통신학회
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/JCN.2010.6388449
Project Code
10MR4800, AT-DMB 상용화 테스트 지원, Song Yun Jeong
Abstract
In this paper, we propose and develop a new algorithm for the principle subspace tracking by orthonormalizing the eigenvectors using an approximation of Gram-Schmidt procedure. We carry out a novel mathematical derivation to show that when this approximated version of Gram-Schmidt procedure is added to a modified form of projection approximation subspace tracking deflation (PASTd) algorithm, the eigenvectors can be orthonormalized within a linear computational complexity. While the PASTd algorithm tries to extracts orthonormalized eigenvectors, the new scheme orthonormalizes the eigenvectors after their extraction, yielding much more tacking efficiency. We apply the new tracking scheme for blind adaptive multiuser detection for non-stationary cellular CDMA environment and use extensive simulation results to demonstrate the performance improvement of the proposed scheme. © 2010 KICS.
KSP Keywords
Adaptive multiuser detection, Blind multiuser detection, CDMA systems, Carry out, Gram-Schmidt, Linear computational complexity, Modified form, Non-Stationary, PASTd algorithm, Projection approximation, Subspace Tracking