Code Orthogonalizing Filter Based Adaptive Array Antenna Using Common Correlation Matrix of Time Domain Signals for Multicarrier DS/CDMA Systems

URI http://harp.lib.hiroshima-u.ac.jp/hiroshima-cu/metadata/4067
File
Title
Code Orthogonalizing Filter Based Adaptive Array Antenna Using Common Correlation Matrix of Time Domain Signals for Multicarrier DS/CDMA Systems
Author
氏名 AHN Chang-Jun
ヨミ アン チャンジュン
別名 安 昌俊
氏名 SASASE Iwao
ヨミ ササセ イワオ
別名 笹瀬 巌
Subject
MC-DS/CDMA
code orthogonalizing filter (COF)
sample matrix inversion (SMI)
adaptive array antenna
common correlation matrix
Abstract

In this paper, we propose the code orthogonalizing filter (COF) based adaptive array antenna using sample matrix inversion with common correlation matrix (CCM-SMI) of time domain signals for multicarrier DS/CDMA systems. The conventional array antenna system calculates the weight using the correlation matrix of individual subcarrier's signals. On the other hand, our proposed system calculates the weight using the correlation matrix of time domain signals before FFT operation, so it can reduce the calculation time and the complexity of weight calculation than the conventional scheme, to maintain the system performance. Moreover, we consider the code orthogonalizing filter to reduce the demerit of adaptive array antenna system using sample matrix inversion algorithm with common correlation matrix that requires heavy computational complexity while the signal environment frequently changes. Our proposed system obtains more accurate channel response vector using COF than that of the conventional CCM-SMI based on the matched filter, without increasing the matrix size. The performance is evaluated in term of bit error probability. From the analysis and simulation results, it is shown that our proposed scheme achieves better BER performance than that of the conventional system.

Description Peer Reviewed
Journal Title
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Volume
E85-A
Issue
7
Spage
1604
Epage
1611
Published Date
2002-07-01
Publisher
電子情報通信学会(IEICE)
ISSN
0916-8508
NCID
AA10826239
Language
eng
NIIType
Journal Article
Text Version
出版社版
Rights
copyright©2002 IEICE
Relation URL
Old URI
Set
hiroshima-cu