Optimizing a filter bandwidth in a digital receiver

Details Optimizing a filter bandwidth in a digital receiver Optimizing a filter bandwidth in a digital receiver

2007-10-09

2007-10-09

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Reexamination Certificate

active

10694931

ABSTRACT:
A digital receiver comprises a quadrature zero intermediate frequency tuner supplying I and Q components to adjustable low pass analog filters. In the case of OFDM signals, a demodulator contains a measuring arrangement which determines the average power of carriers at the band edges and the average power of the OFDM carriers. These are compared and a controller increases the passbands of the filters7and8until the average level of the edge carrier is substantially equal to the average level of all of the carriers.

REFERENCES:
patent: 5155862 (1992-10-01), Hansen
patent: 5715281 (1998-02-01), Bly et al.
patent: 6172543 (2001-01-01), Kurisu
patent: 6356746 (2002-03-01), Katayama
patent: 6895063 (2005-05-01), Cowley et al.
patent: 2001/0021234 (2001-09-01), Katayama et al.
patent: 2002/0075971 (2002-06-01), Cowley et al.
patent: 2003/0206603 (2003-11-01), Husted
patent: 2006/0281432 (2006-12-01), Isaac et al.
patent: 1 182 788 (2002-02-01), None
Patents Act 1977: Search Report under Section 17 for United Kingdom Counterpart Application No. GB 0225598.2 (Jul. 21, 2003).
“ETSI (European Standard (Telecommunications series) EN 300 744: Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television,” Version 1.4.1, ETSI, 850 Route des Lucioles, F-06921 Sophia Antipolis Cedex, FRANCE, pp. 1-49 (Jan. 2001).

Affiliated with

Also associated with

Rating

Optimizing a filter bandwidth in a digital receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optimizing a filter bandwidth in a digital receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimizing a filter bandwidth in a digital receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3842402