Abstract
The conventional RAKE receiver employed in CDMA system can not satisfy the desired demand when the propagation channel possesses a considerable number of paths and a deep fading that causes serious inter-user and inter-symbol interferences. This paper proposes a novel means of adaptive equalizer based on QRD-RLS algorithm to substitute the traditional RAKE receiver. Regarding the computational complexity of the RLS, the well-known CORDIC algorithm has been exploited and plays a key role in the hardware implementation of the new approach. The proposed RLS structure is simulated extensively under different channel parameters and performance is compared against conventional RAKE structure.
The original version of this chapter was revised: The copyright line was incorrect. This has been corrected. The Erratum to this chapter is available at DOI: 10.1007/978-0-387-35618-1_37
Chapter PDF
Similar content being viewed by others
Key Words
Reference
Ozan K. Tonguz, and Melanie M. Wang, “Cellular CDMA Networks Impaired by Rayleigh Fading: System Performance with Power Control”, IEEE Trans. on Veh. Tech., Vol. 43, No. 3, August 1994.
J. Boutros and E. Viterbo, “Signal Space Diversity: A Power-and Bandwidth-Efficient Diversity Technique for the Rayleigh Fading Channel,” IEEE Transactions on Information Theory, vol. IT-44, pp. 1453–1467, July 1998.
E. Eweda. “Comparison of RLS, LMS, and sign algorithms for tracking randomly time-varying channels,” IEEE Trans. on Signal Processing, vol. 42, no. 11, pp. 2937–2944, Nov. 1994.
Y. H. Hu, “CORDIC-based VLSI architecture for digital signal processing.” IEEE Signal Processing Magazine, 9 (3): 16–35, 1992.
GPP TS23.101 V3.5.0: “UE Transmission and reception (FDD)”, Release 1999
Proakis, J.G: “Digital Communications”, Third Edition, McGraw-Hill Inc.,1995
Simon Haykin: “Adaptive Filter Theory”, Third Edition, Prentice-Hall Inc.,1996
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2003 IFIP International Federation for Information Processing
About this chapter
Cite this chapter
Mingqian, T.Z., Madhukumar, A., Chin, F. (2003). CORDIC based QRD-RLS Adaptive Equalizer for CDMA Systems. In: Omidyar, C.G. (eds) Mobile and Wireless Communications. IFIP — The International Federation for Information Processing, vol 106. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35618-1_30
Download citation
DOI: https://doi.org/10.1007/978-0-387-35618-1_30
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-1033-5
Online ISBN: 978-0-387-35618-1
eBook Packages: Springer Book Archive