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Amplitude Banded RLS Approach to Time Variant Channel Equalization
Colin F. N. COWAN
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E84-A No.11 pp.2946-2949
Publication Date: 2001/11/01
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Digital Signal Processing
time variant channel,
decision feedback equalizer,
amplitude banded technique,
Full Text: PDF(166KB)
This paper proposes a non-linear adaptive algorithm, the amplitude banded RLS (ABRLS) algorithm, as an adaptation procedure for time variant channel equalizers. In the ABRLS algorithm, a coefficient matrix is updated based on the amplitude level of the received sequence. To enhance the capability of tracking for the ABRLS algorithm, a parallel adaptation scheme is utilized which involves the structures of decision feedback equalizer (DFE). Computer simulations demonstrate that the novel ABRLS based equalizer provides a significant improvement relative to the conventional RLS DFE on a rapidly time variant communication channel.