Receiving apparatus, transmitting/receiving apparatus, and commu

Details Receiving apparatus, transmitting/receiving apparatus, and commu Receiving apparatus, transmitting/receiving apparatus, and commu

1998-06-24

1999-05-25

Bocure, Tesfaldet

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

375262, 375298, 375341, H04L 2728

Patent

active

059075830

ABSTRACT:
A receiving apparatus that is capable of applying maximum likelihood sequence estimation precisely, with a simple configuration, wherein characteristics of the transmission line of each symbol group are estimated on the basis of the amplitude and the phases of the pilot symbols which have been extracted from the reception symbol group, and the information symbol group is restored from the reception symbol group on the basis of the result of the estimation, and the coded bit group which has been restored from the information symbol group is multiplied by the weighting factor and caused to reflect the reliability of the transmission line of each symbol group, and maximum likelihood sequence estimation is applied to the coded bit group which is reflecting the reliability, and thereby the information bit sequence is restored. As a result, by the use of simple configuration, influences given at the transmission line can be eliminated and so the information symbol group can be restored exactly. In addition, the reliability of the transmission line of each symbol group can be reflected on the coded bit group, and in this way, maximum likelihood sequence estimation can be applied more precisely.

REFERENCES:
patent: 4881245 (1989-11-01), Walker et al.
patent: 5170413 (1992-12-01), Hess et al.
patent: 5278826 (1994-01-01), Murhy et al.
patent: 5412686 (1995-05-01), Ling
patent: 5519730 (1996-05-01), Jasper et al.
patent: 5588022 (1996-12-01), Dapper et al.
patent: 5748677 (1998-05-01), Kumar

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