A simple method for calculating the SINR in DS-CDMA systems with despreading sequences weighted by stepping chip waveforms

被引:1
作者
Develi, I [1 ]
Ciftlikli, C
Kalinli, A
机构
[1] Erciyes Univ, Dept Elect Engn, TR-38039 Kayseri, Turkey
[2] Erciyes Univ, Vocat High Sch, Dept Elect, TR-38039 Kayseri, Turkey
来源
CANADIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING-REVUE CANADIENNE DE GENIE ELECTRIQUE ET INFORMATIQUE | 2003年 / 28卷 / 3-4期
关键词
adjustable chip waveforms; code division multiple access; multiple access interference; signal-to-interference-plus-noise ratio; spread spectrum communications;
D O I
10.1109/CJECE.2003.1425103
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
This article presents a simple method for calculating the signal-to-interference-plus-noise ratio in direct sequence-code division multiple access systems with despreading sequences weighted by stepping chip waveforms. The method is based on a simple equality, which gives a relation among the number of occurrences of various chip patterns belonging to random spreading sequences. It is found that there is no need to scrutinize all the chips of a random spreading sequence to determine the number of transitions that occur between two consecutive chips. Several numerical examples and computation times are provided to demonstrate the validity and significance of this method.
引用
收藏
页码:163 / 167
页数:5
相关论文
共 12 条
[1]  
[Anonymous], 1996, CDMA WIRELESS PERSON
[2]   Determination of most appropriate spreading sequences for a DS/CDMA system by using a modified approach [J].
Ciftlikli, C ;
Develi, I ;
Cetinkaya, B .
11TH IEEE MEDITERRANEAN ELECTROTECHNICAL CONFERENCE, PROCEEDINGS, 2002, :16-20
[3]   Spreading codes for direct sequence CDMA and wideband CDMA cellular networks [J].
Dinan, EH ;
Jabbari, B .
IEEE COMMUNICATIONS MAGAZINE, 1998, 36 (09) :48-54
[4]   A FAMILY OF MULTIUSER DECISION-FEEDBACK DETECTORS FOR ASYNCHRONOUS CODE-DIVISION MULTIPLE-ACCESS CHANNELS [J].
DUELHALLEN, A .
IEEE TRANSACTIONS ON COMMUNICATIONS, 1995, 43 (2-4) :421-434
[5]   Performance of coherent receiver with weighted despreading sequence for DS-CDMA [J].
Huang, YJ ;
Ng, TS .
ELECTRONICS LETTERS, 1997, 33 (01) :23-25
[6]   A DS-CDMA system using despreading sequences weighted by adjustable chip waveforms [J].
Huang, YJ ;
Ng, TS .
IEEE TRANSACTIONS ON COMMUNICATIONS, 1999, 47 (12) :1884-1896
[7]   The influence of initial-phases of a PN code set on the performance of an asynchronous DS-CDMA system [J].
Kärkkäinen, KHA ;
Leppänen, PA .
WIRELESS PERSONAL COMMUNICATIONS, 2000, 13 (03) :279-293
[8]   LINEAR MULTIUSER DETECTORS FOR SYNCHRONOUS CODE-DIVISION MULTIPLE-ACCESS CHANNELS [J].
LUPAS, R ;
VERDU, S .
IEEE TRANSACTIONS ON INFORMATION THEORY, 1989, 35 (01) :123-136
[9]   A NOISE-WHITENING APPROACH TO MULTIPLE-ACCESS NOISE REJECTION .1. THEORY AND BACKGROUND [J].
MONK, AM ;
DAVIS, M ;
MILSTEIN, LB ;
HELSTROM, CW .
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 1994, 12 (05) :817-827
[10]   NEAR OPTIMUM DETECTION IN SYNCHRONOUS CODE-DIVISION MULTIPLE-ACCESS SYSTEMS [J].
VARANASI, MK ;
AAZHANG, B .
IEEE TRANSACTIONS ON COMMUNICATIONS, 1991, 39 (05) :725-736