Abstract
In MultiCarrier Code-Division Multiple-Access (MC-CDMA) system, the received signals scattered in the frequency domain are combined to get frequency diversity gain. However, the frequency diversity gain is limited because of correlation between subcarriers. A novel interleaving scheme for MC-CDMA system is proposed in this paper. A circular shifting register is introduced into each subcarrier branch to decrease the correlation between subcarriers. By using interleaving, frequency diversity gain of system is increased. System structure and model with interleaver are discussed. In the case of multiple users, Parallel Interference Cancellation (PIC) technique is also introduced. Computer simulations demonstrate the performance of proposed scheme, and the performance comparison of MC-CDMA with interleaver and conventional MC-CDMA system is shown as well.
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References
N. Yee, J. P. Linnartz, G. Fettweis, Multicarrier CDMA in indoor wireless radio networks, Proc. of IEEE PIMRC’ 93, Yokohama, Japan, Sept. 1993, 109–113.
K. Fazel, L. Papke, On the performance of convolutionally-coded CDMA/OFDM for mobile communication system, Proc. of IEEE PIMRC’ 93, Yokohama, Japan, Sept. 1993, 468–472.
A. Chouly, A. Brajal, S. Jourdan, Orthogonal multicarrier techniques applied to direct sequence spread spectrum CDMA systems, Proc. of IEEE GLOBECOM’ 93, Houston, USA, Nov.29–Dec.2, 1993, 1723–1728.
V. M. DaSilva, E. S. Sousa, Performance of orthogonal CDMA codes for quasi-synchronous communication systems, Proc. of IEEE ICUPC’ 93, Ottawa, Canada, Oct. 1993, 995–999.
L. Vandendorpe, Multitone direct sequence CDMA system in an indoor wireless environment, Proc. of IEEE First Symposium of Communications and Vehicular Technology in Benelux, Delft, The Netherlands, Oct. 1993, 4.1.1–4.1.8.
Shinsuke Hara, Ramjee Prasad, Design and performance of multicarrier CDMA system in frequency-selective Rayleigh fading channels, IEEE Trans. on Vehicular Technology, 48(1999)5, 1584–1595.
Ye Li, Leonard J. Climini, Nelson R. Sollenberger, Robust channel estimation for OFDM systems with rapid dispersive fading channels, IEEE Trans. on Comm., 46(1998)7, 902–915.
Shinsuke Hara, Ramjee Prasad, Overview of multicarrier CDMA, IEEE Communications Magazine, 35(1997)12, 126–133.
M. K. Varanasi, B. Aazhang, Multistage detection in asynchronous code-division multiple-access communications, IEEE Trans. on Comm., 38(1990)4, 509–519.
M. K. Varanasi, B. Aazhang, Near-optimum detection in synchronous code-division multiple-access systems, IEEE Trans. on Comm., 39(1991)5, 725–736.
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Shi, F., Cheng, S. Interleaving scheme for multicarrier CDMA system. J. of Electron.(China) 21, 16–22 (2004). https://doi.org/10.1007/BF02687793
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DOI: https://doi.org/10.1007/BF02687793