Raised-cosine filtering for modems

Details Raised-cosine filtering for modems Raised-cosine filtering for modems

1986-10-03

1988-03-15

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375101, 375103, 375 60, H04B 1500, H04L 2508

Patent

active

047318007

ABSTRACT:
Filter quality is substantially improved (or complexity substantially reduced) in a digital PSK modem requiring an overall filter characteristic of the percent raised cosine type by using, in both the transmitter and the receiver, a filter having the same percent raised cosine response but at a higher cutoff frequency which satisfies the formula ##EQU1## where f.sub.f is the cutoff frequency (6 db) of the new filter, f.sub.o is one-half the baud rate of the modem, and .alpha. is the percent raised cosine expressed in decimal form.

REFERENCES:
patent: 4261053 (1981-04-01), Dostis et al.
patent: 4507794 (1985-03-01), Jones et al.
patent: 4660216 (1987-04-01), Claasen et al.

Affiliated with

Also associated with

Rating

Raised-cosine filtering for modems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Raised-cosine filtering for modems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raised-cosine filtering for modems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1930539