An Analysis of the Bidirectional LMS Algorithm over Fast-Fading Channels

• Published in: IEEE transactions on communications Vol. 60; no. 7; pp. 1759 - 1764
• Main Authors: Yapici, Y., Yilmaz, A. O.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: adaptive estimation; Applied sciences; Bit error rate; Channel estimation; Doppler effect; Estimation; Exact sciences and technology; Fading; fading channels; least mean square methods; Least squares approximation; mean square error methods; Signal to noise ratio; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Time-varying channels; Transmission and modulation (techniques and equipments); Fading channels; Performance evaluation; Time variable channel; Bidirectional link; Target tracking; Bit error rate; least mean square methods; Adaptive estimation; Steady state; Frequency selector; Mean square error; Frequency selection; Algorithm performance; Time-varying channels; Robustness; mean square error methods; Least mean squares methods
• ISSN: 0090-6778; 1558-0857; 1558-0857
• DOI: 10.1109/TCOMM.2012.050812.110116

A bidirectional LMS algorithm is considered for estimation of fast frequency-selective time-varying channels with a promise of near optimal tracking performance and robustness to parameter imperfections under various scenarios at a practical level of complexity. The performance of the algorithm is verified by the theoretical steady-state MSE analysis and experimental bit error rate (BER) results.