Analysis of uplink quasi-synchronous CDMA system using orthogonal polyphase sequences

被引：0
|
作者：
Khan, Zaheer [1 ]
机构：
[1] Univ Coll Boras, Boras, Sweden
来源：
2007 IFIP INTERNATIONAL CONFERENCE ON WIRELESS AND OPTICAL COMMUNICATIONS NETWORKS | 2007年
关键词：
bit error rate (BER); interference free window (IFW); loosely synchronized codes (LS-codes); loosely synchronized-UCHT (LS-UCHT); modified UCHT; multiple access interference (MAI); signal-to-noise ratio (SNR); unified complex Hadamard transform (UCHT); zero correlation zone (ZCZ);
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The bit error rate (BER) performance for uplink quasi-synchronous code division multiple access system using different sets of orthogonal polyphase sequences is analyzed in this paper. The BER performance is evaluated in AWGN and flat Rayleigh fading channels. Correlation functions of some sequence sets are also compared. It is shown that LS-UCHT sequences have better autocorrelation properties as compared to unified complex Hadamard transform (UCHT) and modified UCHT sequences. Moreover, first 16 sequences of each set are compared and it is observed that LS-UCHT sequences having interference free window exhibit better BER performance for many sequences as compared to other sequence sets, for the system under consideration.
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页码：361 / 364
页数：4
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