Joint maximum likelihood channel and timing error estimation

Details Joint maximum likelihood channel and timing error estimation Joint maximum likelihood channel and timing error estimation

1995-05-11

1998-01-06

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375344, 375346, 375368, 375355, 370514, 370520, 348537, H04L 2706

Patent

active

057063141

ABSTRACT:
A system and method for jointly determining initial tap coefficients for a maximum likelihood sequence estimating equalizer and a timing error of an incoming signal, in one embodiment, receives the incoming signal into a receiver, and locates a known portion within a time frame of the incoming signal. The known portion is compared with a stored representation of the known portion, and with a stored representation of a derivative of the known portion. The initial tap coefficients and timing error of the incoming signal are jointly determined based on the comparing of the known portion with the stored representations, and a subsequent known portion is located within a subsequent time frame of the incoming signal based on the timing error. The initial tap coefficients are passed to a maximum likelihood sequence estimating equalizer.

REFERENCES:
patent: 5233632 (1993-08-01), Baum et al.
patent: 5276706 (1994-01-01), Critchlow
patent: 5475710 (1995-12-01), Ishizu et al.

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