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|Title:||A new multicarrier multicode DS-CDMA scheme for time and frequency selective fading channels|
Multicarrier CDMA system
|Citation:||Cao, Y.,Tjhung, T.T.,Ko, C.C. (2005). A new multicarrier multicode DS-CDMA scheme for time and frequency selective fading channels. Journal of Communications and Networks 7 (1) : 13-20. ScholarBank@NUS Repository.|
|Abstract:||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 . It is shown that the two systems have almost the same BER performance, but the proposed scheme has better anti-jamming ability. © 2005 KICS.|
|Source Title:||Journal of Communications and Networks|
|Appears in Collections:||Staff Publications|
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