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http://dx.doi.org/10.7236/JIIBC.2021.21.6.43

A Study on the Bandwidth Efficiency of MC-CDMA System  

Jee, Innho (Dept. of Software and Communication Engineering, Hongik University)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.21, no.6, 2021 , pp. 43-48 More about this Journal
Abstract
We propose 2-channel filter bank method instead of FFT method to decrease sub-channel interference for using of efficient frequency resource in MC-CDMA method. Since a prototype filter of filter bank having wavelet characteristic is designed having more less side-lobe, the nearest co-channel interference and inter symbol interference are decreased efficiently. Since the spreading signal of suggesting MC-CDMA system is being demanded for less chip rate and is not being considering for autocorrelation characteristic, the Walsh code can be used as a optimal orthogonal signal set. We consider bit error rate and signal to noise ratio to estimate the performance of suggested system on condition that white noise channel and arbitrary sinusoidal jammer are existing. As a result of comparing to traditional FFT-based MC-CDMA simulation result, our suggested system has shown better performance than traditional MC-CDMA method on the side of minimizing interference effect.
Keywords
MC-CDMA; Discrete Wavelet Transform; Walsh Code; Interference;
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1 Jeongsu Kim and Monho Lee, "Multi-User X-Channel Interference Alignment in 5 Generation MIMO Mobile Communications", Vol. 17 No. 5, pp. 61 - 69, October 2017. DOI: https://doi.org/10.7236/JIIBC.2017.17.5.61   DOI
2 Branislav M. Popovic, "Spreading Sequences for Multicarrier CDMA Systems," IEEE Trans. on Comm., Vol. 47, No 6, pp. 918 - 926, June 1999.   DOI
3 Ali N Akansu, Mehmet V. Tazebay, Michael J.Medley, Pankaj K. Das, "Wavelet and Subband Transforms : Fundamental and Communication Applications," IEEE Communication Magazine, pp. 104 - 115, Dec. 1997.
4 Kenneth Hetling, Michael Medley, Gary Saulnier, and Pankaj Das, "A PR-QMF(Wavelet) Based Spread Spectrum Communications System," IEEE, pp. 760 - 764, 1994.
5 Mike Mettke, Michael J. Medley, Gary J. Saulnier and P. Das, "Wavelet Transform Excision Using IIR filters in Spread Spectrum Communication Systems," IEEE, 1994.
6 I. Daubechies, "Orthonormal basis of compactly supported wavelets," Comm. Pure and Appl. Math, XLI:909 - 996, 1988.   DOI
7 Kenneth Hetling, Gary Saulnier, and Pankaj Das, "Optimized Filter Design for PR-QMF Based Spread Spectrum Communications," IEEE, pp. 1350 - 1354, 1995.
8 Cormac Herley, Martin Vetterli, "Wavelet and Recursive Filter Banks," IEEE Transaction on Signal Processing. Vol. 41, No. 8, Aug. 1993.
9 Jongbok Lee, "Effects Analysis of DRAM for Digital Signal Processor Performance" Vol. 18 No. 3, pp. 177-183, June 2018. DOI: https://doi.org/10.7236/JIIBC.2018.18.3.177   DOI
10 Laurence B. Milstein, "Waveform and Receiver Design Considerations on Wideband CDMA," IEEE Personal Comm., pp. 24 - 30, Oct. 1999.
11 Ho-Young Cheong, "A Study on Hamming Codes for Mitigating ISI on the Diffusion-based Molecular Communication Channel," JKAIS, 21-2, Vol.14 No. 1, pp. 1 - 6, Febr. 2021. DOI: https://doi.org/10.17661/jkiiect.2021.14.1.1   DOI