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Adaptive Subchannel Allocation for MC-CDMA System

Authors: Cuiran Li, Jianli Xie, Chengshu Li


Multicarrier code-division multiple-access is one of the effective techniques to gain its multiple access capability, robustness against fading, and to mitigate the ISI. In this paper, we propose an improved mulcarrier CDMA system with adaptive subchannel allocation. We analyzed the performance of our proposed system in frequency selective fading environment with narrowband interference existing and compared it with that of parallel transmission over many subchannels (namely, conventional MC-CDMA scheme) and DS-CDMA system. Simulation results show that adaptive subchannel allocation scheme, when used in conventional multicarrier CDMA system, the performance will be greatly improved.

Keywords: Channel Estimation, Rayleigh fading, MC-CDMA, Narrowbandinterference

Digital Object Identifier (DOI):

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[1] S. Qinghua, M. Latva-Aho, "Accurate bit-error rate evaluation for synchronous MC-CDMA over Nakagami-m-fading channels using moment generating functions", IEEE Trans. on Wireless Commun., Volume 4, pp. 422-433, March 2005
[2] S.Chatterjee, W.A.C Fernando and M.K. Wasantha," Adaptive modulation based MC-CDMA systems for 4G wireless consumer applications" IEEE Trans. on Consumer Electronics, Volume 49, pp: 995-1003, Nov. 2003
[3] H.Xiaoyu, C.H. Yong, "On the performance and capacity of an asynchronous space-time block-coded MC-CDMA system in the presence of carrier frequency offset" IEEE Trans.on VTC, Volume 53, pp.1327- 1340, Sept. 2004
[4] W. Xianbin, P. Ho and Y. Wu, "Robust channel estimation and ISI cancellation for OFDM systems with suppressed features", IEEE Journal on Selected Areas in Communications, Volume 23, pp. 963-972, May 2005
[5] B. Hombs, J .S. Lehnert, "Multiple-access interference suppression for MC-CDMA by frequency-domain oversampling", IEEE Trans. on Commun, Volume 53, pp. 677-686, April 2005
[6] S.A Zekavat, C.R Nassar and S. Shattil, "Merging multicarrier CDMA and oscillating-beam smart antenna arrays: exploiting directionality, transmit diversity, and frequency diversity", IEEE Trans. on Commun, Volume 52, pp. 110-119, Jan. 2004
[7] L. Junqiang, K .B. Letaief, and C Zhigang, "Space-time turbo multiuser detection for coded MC-CDMA", IEEE Trans. on Wireless Commun, Volume 4, pp. 538-549, Mar. 2005
[8] K. Kyunbyoung, K. Taeyoung, C. Sooyong and H. Daesik. "Semianalytical approach of asynchronous MC-CDMA systems with a cyclic prefix", IEEE Commun Letters, Volume 9, pp.142-144, Feb. 2005
[9] S.Kondo and L.B.Milstein, "Performance of multicarrier DS CDMA system", IEEE Trans. Commn., vol. 44, pp.238-246, Feb.1996
[10] Cuiran Li. Researches in Key Technologies for Wireless Communication Systems Using MC-CDMA. Doctoral Dissertation in Northern Jiaotong University, P.R.China. Mar. 2003
[11] A. Papoulis. Probability, Random Variables, and Stochastic Processes. 3rd ed, Singgapore: McGraw Hill, 1991