Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1990-06-26
1992-07-14
Safourek, Bendict V.
Pulse or digital communications
Spread spectrum
Direct sequence
341106, 371 378, 36457107, H03D 106, H03M 700
Patent
active
051310112
ABSTRACT:
Non-linear intersymbol interference and noise in a received data signal are corrected through use of a Viterbi detector which estimates the most likely sequence of transmitted data symbols by keeping track of candidate data sequence that are recursively updated, based on likelihood measures which are determined by a signal processor which includes circuits for estimating hypothesized channel outputs in the absence of noise. Non-linear input-output relations are stored in one or more look-up tables which, in a preferred embodiment, are registers that store hypothesized channel output symbols in the absence of noise. The contents of the look-up tables may be modified in response to an error signal representative of the difference of the channel output signal and the look-up table output signal.
REFERENCES:
patent: 4163209 (1979-07-01), McRae
patent: 4564952 (1986-01-01), Karabinis et al.
patent: 4688226 (1987-08-01), Burgmeier et al.
patent: 4733402 (1988-03-01), Monsen
patent: 4885757 (1989-12-01), Provence
patent: 4905254 (1990-02-01), Bergmans
patent: 4953183 (1990-08-01), Bergmans et al.
Bergmans Johannes W. M.
Izumita Morishi
Mita Seiichi
Hitachi , Ltd.
N. V. Philips Gloeilampenfabrieken
Safourek Bendict V.
Treacy David R.
Tse Young
LandOfFree
Receiver for data transmission system with nonlinearities does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Receiver for data transmission system with nonlinearities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver for data transmission system with nonlinearities will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-341760