Adaptive equalizer capable of linear and nonlinear weighting

Details Adaptive equalizer capable of linear and nonlinear weighting Adaptive equalizer capable of linear and nonlinear weighting

1980-12-29

1984-03-06

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

364724, H04B 318

Patent

active

044358237

ABSTRACT:
Equalizers are commonly used in digital data signaling systems to reduce the effects of intersymbol interference on a signal received over a transmission channel. However, conventional equalizers are relatively slow due to their use of multipliers. Also, generally such equalizers are limited to providing a linear response to the received input signal samples. Accordingly, to provide a high-speed equalizer which is capable of both linear and nonlinear response, a transmission channel signal containing intersymbol interference is passed through a delay means which provides sequential Q-bit samples of said transmission channel signal. These Q-bit samples are then applied to a weighting means which includes a memory having stored equalizing weighting values which are accessed in accordance with the Q-bit samples to provide predetermined weighted output words in response to the Q-bit samples. These output words can be either linear or nonlinear with respect to the Q-bit samples. This technique serves to reduce intersymbol interference in the received signal thereby equalizing this signal. Also, since no multipliers are necessary, the equalizing operation can be carried out at a very high speed.

REFERENCES:
patent: 4034196 (1977-07-01), Butterweck et al.
patent: 4038536 (1977-07-01), Feintuch
patent: 4053734 (1977-10-01), Berlin et al.
patent: 4066881 (1978-01-01), Houdard
patent: 4125900 (1978-11-01), Betts
patent: 4146931 (1979-03-01), Delforge
patent: 4163209 (1979-07-01), McRae
patent: 4233683 (1980-11-01), McRae
patent: 4261051 (1981-04-01), Ohnishi
patent: 4285061 (1981-08-01), Ho
patent: 4343759 (1982-08-01), Kustka et al.

Affiliated with

Also associated with

Rating

Adaptive equalizer capable of linear and nonlinear weighting does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive equalizer capable of linear and nonlinear weighting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive equalizer capable of linear and nonlinear weighting will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-744902