Low bias estimation of small signal-to-noise ratio

Details Low bias estimation of small signal-to-noise ratio Low bias estimation of small signal-to-noise ratio

2008-05-20

2008-05-20

Odom, Curtis B (Department: 2611)

Pulse or digital communications

Testing

Signal noise

C375S229000, C375S346000, C375S347000, C375S348000, C375S249000, C375S350000, C702S069000

Reexamination Certificate

active

10867508

ABSTRACT:
An apparatus and method for estimation of signal-to-noise ratio (SNR) with low bias that is effective for both positive SNRs and small to negative SNRs. The estimation is based on an iterative solution for the maximum likelihood estimate of the amplitude from which the SNR can be computed. The estimation is applicable for various modulated systems, including BPSK, QPSK and MPSK.

REFERENCES:
patent: 4627103 (1986-12-01), Fukuhara
patent: 5870393 (1999-02-01), Yano et al.
patent: 6442495 (2002-08-01), Fleming-Dahl
patent: 6611794 (2003-08-01), Fleming-Dahl
Proakis, “Digital Communications,” NY, McGraw Hill, 1983, pp. 162-165.
Wiesel et al., “Non-Data-Aided Signal-to-Noise-Ratio Estimation,” IEEE, 2002.
Pauluzzi et al., A Comparison of SNR Estimation Techniques for the AWGN Channel, IEEE Transactions on Communications, vol. 48, No. 10, Oct. 2000, pp. 1681-1691.
Beaulieu et al., “Comparison of Four SNR Estimators for QPSK Modulations,” IEEE Communications Letters, vol. 4, No. 2, Feb. 2000, pp. 43-45.
Matzner et al., “An SNR Estimation Algorithm Using Fourth-Order Moments,” IEEE Int. Symp. Inform. Theory, Trondheim, Norway, Jun. 1996, p. 119.

Affiliated with

Also associated with

Rating

Low bias estimation of small signal-to-noise ratio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low bias estimation of small signal-to-noise ratio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low bias estimation of small signal-to-noise ratio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3941588