A new multicarrier multicode DS-CDMA scheme for time and frequency selective fading channels

作     者：Cao, YW Tjhung, TT Ko, CC 

作者机构：Univ Glamorgan Sch Comp Pontypridd CF37 1DL M Glam Wales Inst Infocomm Res Singapore Singapore Natl Univ Singapore Dept Elect & Comp Engn Singapore 117548 Singapore 

出 版 物：《JOURNAL OF COMMUNICATIONS AND NETWORKS》 (通讯与网络杂志)

年 卷 期：2005年第7卷第1期

页      面：13-20页

核心收录：

学科分类：0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：DS-CDMA multicarrier CDMA system multicode transmission 

摘      要：In this paper, a new multicarrier, direct sequence code division multiple access (MC-DS-CDMA) system is proposed. Our new signal construction is based on convolutional encoding of the transmitted data, serial-to-parallel (S/P) conversion of the encoded data, Walsh-Hadamard-transformation (WHT), a second S/P conversion of the WHT outputs, spread spectrum (SS) modulation with a common pseudo-noise (PN) sequence, and then multicarrier transmission. The system bit error rate (BER) performance in frequency selective fading channel in the presence of additive white Gaussian noise (AWGN) and a jamming tone is analyzed and simulated. The numerical results are compared with those from an orthogonal MC-DS-CDMA system of Sourour and Nakagawa [7]. It is shown that the two systems have almost the same BER performance, but the proposed scheme has better anti-jamming ability.