FIR digital filter for high-speed communications systems

Details FIR digital filter for high-speed communications systems FIR digital filter for high-speed communications systems

1990-02-16

1991-07-09

Harkcom, Gary V.

Boots, shoes, and leggings

G06F 738

Patent

active

050311336

ABSTRACT:
A Finite Impulse Response (FIR) filter comprising (2n+1) successive virtual taps having virtual tap weight coefficients c.sub.j, where n.gtoreq.2 and 1.ltoreq.j.ltoreq.2n+1, and c.sub.j =c.sub.2n+2-j. Tap weight multipliers are connected to the input terminal of the filter to form (n+1) successive physical taps and multiply input digital samples a.sub.i with physical tap weight coefficients d.sub.k to produce weighted digital samples, where k is a variable in the range between 1 and n+1, and d.sub.k =c.sub.2k-1 +c.sub.2k =c.sub.2(n-k+1) +C.sub.2(n-k+1), and d.sub.n+1 =c.sub.1 =c.sub.2n+1. First shift registers with delay time T and first adders are alternately series-connected from the output of a first one of the multipliers so that the outputs of the other multipliers are summed with successive outputs of the first shift registers to produce a first output sequence. Second shift registers with delay time T and second adders are alternately series-connected from the output of a last one of the multipliers so that the outputs of the other tap weight multipliers are summed with successive outputs of said second shift register to produce a second output sequence. The first output sequence is sampled at intervals T for a first half duration the second output sequence is sampled at intervals T for a second half duration and multiplexed with the sampled first output sequence into a sequence of output digital samples for coupling to the output terminal of the filter.

REFERENCES:
patent: 4691292 (1987-01-01), Rothweiler
patent: 4777612 (1988-10-01), Tomimitsu
patent: 4811263 (1989-03-01), Hedley et al.
patent: 4821223 (1989-04-01), David

Affiliated with

Also associated with

Rating

FIR digital filter for high-speed communications systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with FIR digital filter for high-speed communications systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FIR digital filter for high-speed communications systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-623363