Blind Channel Estimation Based on URV Decomposition Technique for Uplink of MC-CDMA
In this paper, we investigate a blind channel estimation method for Multi-carrier CDMA systems that use a subspace decomposition technique. This technique exploits the orthogonality property between the noise subspace and the received user codes to obtain channel of each user. In the past we used Singular Value Decomposition (SVD) technique but SVD have most computational complexity so in this paper use a new algorithm called URV Decomposition, which serve as an intermediary between the QR decomposition and SVD, replaced in SVD technique to track the noise space of the received data. Because of the URV decomposition has almost the same estimation performance as the SVD, but has less computational complexity.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1082475Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1435
 N. Yee and J. Linnartz, "Multi-Carrier CDMA in an Indoor Wireless Radio Channel," in Proc. IEEE Int. Symp. On Personal, Indoor and Mobile Radio Commun., Vol. 2, Sep. 1993, pp. 109-113.
 S. Hara and R. Prasad, "DS-CDMA, MC-CDMA and MTCDMA for Mobile Multimedia Communication," in Proc. IEEE Vehic. Technol. Conf., Vol. 3, May 1996, pp. 106-111.
 S. Hara and R. Prasad, "Overview of multicarrier CDMA," IEEE Commun. Mag., Vol.35, Dec. 1997, pp. 126-133.
 S. Hara and R. Prasad, "Design and performance of multicarrier cdma system in frequency-selective rayleigh fading channels," IEEE Transactions on Vehicular Technology, 48(5), Sep. 1999, pp. 1584-1595.
 U. Tureli, D. Kivanc, and H. Liu, "Channel estimation for multicarrier cdma," In Proceedings of the IEEE ICASSP 2000, Vol. 5, Jun. 2000, pp. 2909-2912.
 G. W. Stewart, "An updating algorithm for subspace tracking," IEEE Transactions Signal Processing, Vol. 40, No. 6, Jun. 1992, pp. 1535-1541.
 N. J. Higham, "A survey of condition number estimation for triangular matrices," SIAM Rev., Vol. 29, 1987, pp. 575-596