Digital equalizing method and radio communication receiver...

Details Digital equalizing method and radio communication receiver... Digital equalizing method and radio communication receiver...

2005-02-01

2005-02-01

Fan, Chieh M. (Department: 2634)

Pulse or digital communications

Equalizers

C375S340000, C708S323000

Reexamination Certificate

active

06850562

ABSTRACT:
For processing samples of a signal received via a channel represented by an impulse response of W−1 coefficients, the method comprises: determining the W roots of the Z-transform of the channel impulse response; producing an intermediate signal by equalizing the received signal by a zero-forcing method or the like based on an impulse response whose Z-transform is a Z−1polynomial of degree W-p having as roots those of the W roots which are furthest from the unit circle of the complex plane; and then obtaining estimations of the transmitted signal symbols by applying a Viterbi-type equalization method or the like based on an impulse response whose Z-transform is a Z−1polynomial of degree p having as roots those of the W roots which are nearest to the unit circle.

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Batteman, et al., <<Comparison of Algorithms for use in Adaptive Adjustment of Digital Data Receivers>>, IEE Proceedings I. Solid-State & Electron Devices, Apr. 1, 1990, vol. 137, No. 2, Part 01, pp. 85-96.

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