The Channel Shortening comparison between OFDM & MC-CDMA System over an ADSL Channel using a Water-filling

bouasria fatima


In this paper our objective focuses on the development of digital transmission techniques in order to solve the problem of Inter-Symbol Interference (ISI) due to multiple paths and the improvement of Multi-Carrier Code Division Multiple Access (MC-CDMA) system performance. The both algorithm: MERRY algorithm (Multicarrier Equalization by Restoration of Redundancy) called TEQ (Time domain EQualizer) and the power allocation method to allocate appropriate power to each user (Water-filling technique (WF)) [1] is used. Finally, the numerical results show that combining Water Filling with TEQ technique allows to reduce the ISI for MC-CDMA systems.


MC-CDMA; Water-filling; OFDM; ADSL channel; TEQ equalizer; MERRY algorithm


F. Bouasria and M. Chetioui, “Watter-Filling for Cyclic Prefexed Multi-carrier Transmission over an ADSL Channel using a TEQ Equalizer” International Journal of applied Engineering Research, Vol 10, N° 10 (2015), pp. 26339-26345.

Suresh, Mahadevan,” Power Control for Mc-CdmaSystem with Predicted Csi Using Water Filling Algorithm”, IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-ISSN: 2278-2834,p- ISSN:2278-8735.Volume 9, Issue 5, Ver.1(Sep-Oct. 2014), PP 24-30.

R. K. Martin, C. R. Johnson, M. Ding and B. L. Evans, (2003) Infinite Length Results for channel Shortening Equalizers, V IEEE Signal Processing Workshop on Signal Processing Advance in Wireless Communication (SPAWC 2003) June 15-18.

J. A. C. ingham, (1990) Multi-carrier Modulation for Data Transmission: An Idea Whose Time Has Come, IEEE Commun. Mag, vol. 28, No. 5, pp.5-14.

N. Yee, J-P. Linnartz and G. Fettweis, (1993) Multi-Carrier CDMA in Indoor Wireless Radio Networks, "Proc. of IEEE PIMRC 93, pp.109-113, Yokohama, Japan.

P. J. W. Melsa, R. C. Younce, and C. E. Rohrs, (1996) Impulse Response Shortening for Discrete Multitone Transceivers, IEEE Trans. on Comm., vol. 44, pp. 1662-1672.

G. Arslan, B. L. Evans, and S. Kiaei, (2001) Equalization for Discrete Multitone Receivers To Maximize Bit Rate, IEEE Trans. on Signal Processing, vol. 49, no. 12, pp. 3123-3135.

B. Farhang, Boroujeny and M. Ding, (2001) Design Methods for Time-Domain Equalizers in DMT Transceivers, IEEE Trans on Comm., vol. 49, no. 3, pp. 554-562.

R. K. Martin, J. Balakrishnan, W. A. Sethares, and C. R. Johnson, Jr., (2002) Blind, Adaptive TEQ Channel Shortening for Multicarrier Systems, IEEE Signal Processing Letters, vol. 9, no. 11, pp. 341-343.

J. Wu, G. Arslan, and B. L. Evans, (2000) Efficient Matrix Multiplication Methods to Implement a Near Optimum Channel Shortening Method for Discrete Multitone Trans-ceivers, in Proc. IEEE Asilomar Conf. on Signals, Systems, and Computers, Pacific Grove, CA, vol. 1, pp. 152-157.

P. J. W. Melsa, R. C. Younce, and C. E. Rohrs, (1996) Impulse Response Shortening for Discrete Multitone Transceivers, IEEE Trans. on Com., vol. 44, pp. 1662-1672.

Samir Abd Elghafar, Salaheldin M. Diab, Bassiouny M. Sallam, Moawad I. Dessouky , El-Sayed M. El-Rabaie, Fathi E. Abd El-Samie, Multi-carrier Equalization by Restoration of RedundancY (MERRY) for Adaptive Channel Shortening in Multi-carrier Systems , International Journal of Network Security & Its Applications (IJNSA), Vol.5, No.6, November 2013.

G. Arslan, M. Ding, B. Lu, Z. Shen, and B. L. Evans, (2009)TEQ design toolbox, The University of Texas at Austin, available at dmtteq/dmtteq.html [accessed 2009].

L. Yang, C.G. Kang, (2006) Desing of Novel Time-Domain Equalizer (TEQ) for OFDM System, IEICE TRANS; Commun, Vol. E89-B, N°.10

Olivier. Rioul, (2006) Corps Finis, Version 2. à (1996 -2006), p 27-34.

R. K. Martin, M. Ding, B. L. Evans and C. R. Johnson, (2003) Efficient Channel Shortening Equalizer Design, EURASIP Journal on Applied Signal Processing: 13, 1279-1290.

F. Bouasria and M.chetioui , “Water-Filling for Cyclic Prefixed Multi-Carrier Transmission over an ADSL Channel using a TEQ Equalizer”, International Journal of Applied Engineering Research, Volume 10, Number 10 (2015) pp.26339-26345.

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