Title :
Performance analysis of multi-rate QS-CDMA systems employing OVSF-ZCZ codes
Author :
Lifang Feng ; Pingzhi Fan
Author_Institution :
Inst. of Mobile Commun., Southwest Jiaotong Univ., Chengdu
Abstract :
This paper investigates the multiple access interference (MAI) of multi-rate quasi-synchronous code division multiple access (QS-CDMA) system, together with the bit error rate (BER) performance of multi-rate QS-CDMA system employing orthogonal variable spreading factor (OVSF) codes, zero correlation zone (ZCZ) codes and OVSF codes with a ZCZ (OVSF-ZCZ codes). Our analysis results show that the BER performances of the multi-rate QS-CDMA system employing OVSF-ZCZ codes are superior to those of systems employing OVSF codes and ZCZ codes.
Keywords :
code division multiple access; correlation methods; error statistics; orthogonal codes; radiofrequency interference; BER performance; MAI; OVSF code; ZCZ code; bit error rate; multiple access interference; multirate QS-CDMA system; orthogonal variable spreading factor; quasisynchronous code division multiple access system; zero correlation zone; Multiple access interference; OVSF codes; OVSF-ZCZ codes; Quasi-synchronous CDMA system; ZCZ codes;
Conference_Titel :
Wireless, Mobile and Sensor Networks, 2007. (CCWMSN07). IET Conference on
Print_ISBN :
978-0-86341-836-5
