Coherent tracking for FM in-band on-channel receivers

Details Coherent tracking for FM in-band on-channel receivers Coherent tracking for FM in-band on-channel receivers

2007-12-04

2007-12-04

Tran, Khanh C. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

Reexamination Certificate

active

10715582

ABSTRACT:
A method for coherently tracking a radio signal including at least one digitally modulated reference carrier is provided, wherein the method comprises the steps of demodulating the reference carrier to produce complex coherent reference gains, detecting a transient that affects the complex coherent reference gains, and adjusting the complex coherent reference gains in the vicinity of the transient to produce adjusted complex coherent reference gains. The transient can be caused by switching among the antenna elements or impulsive noise. Receivers that process signals in accordance with the method, and a method of estimating noise variance of symbols in a radio signal are also provided.

REFERENCES:
patent: 3833741 (1974-09-01), Katz et al.
patent: 4155041 (1979-05-01), Burns et al.
patent: 5323421 (1994-06-01), LaRosa et al.
patent: 5465411 (1995-11-01), Koike
patent: 5499397 (1996-03-01), Wadin et al.
patent: 5561673 (1996-10-01), Takai et al.
patent: 5940454 (1999-08-01), McNicol et al.
patent: 6018651 (2000-01-01), Bruckert et al.
patent: 6023615 (2000-02-01), Bruckert et al.
patent: 6317470 (2001-11-01), Kroeger et al.
patent: 6327481 (2001-12-01), Nagashima
patent: 6490007 (2002-12-01), Bouillet et al.
patent: 6539063 (2003-03-01), Peyla et al.
patent: 6549544 (2003-04-01), Kroeger et al.
patent: 6628733 (2003-09-01), Tomiyoshi et al.
patent: 6633258 (2003-10-01), Lindenmeier et al.
patent: 2001/0031022 (2001-10-01), Petrus et al.
patent: 2002/0037057 (2002-03-01), Kroeger et al.
patent: 2002/0168955 (2002-11-01), Wildhagen
patent: 2003/0026360 (2003-02-01), Ramasubramanian et al.
patent: 2003/0137928 (2003-07-01), Kroeger et al.
patent: 1047236 (2000-10-01), None
R. S. Blum et al., “An Adaptive Spatial Diversity Receiver For Non-Gaussian Interference and Noise,” Signal Processing Advances in Wireless Communications, First IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Communications, Paris, France, Apr. 16-18, 1997, pp. 385-388.

Affiliated with

Also associated with

Rating

Coherent tracking for FM in-band on-channel receivers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coherent tracking for FM in-band on-channel receivers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent tracking for FM in-band on-channel receivers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3869191