Author/Authors :
SORGUCU, Uğur Bartın Üniversitesi, Turkey , KABALCI, Yasin Erciyes Üniversitesi - Fen Bilimleri Enstitüsü, Turkey , DEVELİ, İbrahim Erciyes Üniversitesi, Turkey
Title Of Article :
The effect of spreading codes on the bit error rate performance of code division multiple access communications
Abstract :
In the code division multiple access systems, all users use the same bandwidth at the same time. CDMA is different from the frequency division multiple access which allows using a part of the frequency band and time division multiple access systems which allows using a part of the time. In order to use all of bandwidth at the same time, pseudo noise codes are assigned to the users and these codes must be known both by receiver and transmitter. The quality of communication may decrease with increasing of users, number of modulation levels and symbol rate. In this study, the effect of different spreading codes on the bit error rate performance of CDMA communication is investigated. According to the results of the simulation in Matlab working environment, CDMA communications which use the ortogonal Gold series show better performance than the CDMA communications which use m sequences or Gold sequences.
NaturalLanguageKeyword :
CDMA , Bit Error Rate , Spreading Codes
JournalTitle :
Erciyes University Journal Of The Institute Of Science and Technology
