Efficient blind equalization for quadrature amplitude...

Pulse or digital communications – Equalizers

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S235000

Reexamination Certificate

active

07978758

ABSTRACT:
Methods and apparatus are provided for receiving a signal transmitted with a quadrature amplitude modulation (QAM) constellation. In an embodiment of the invention, a blind equalization algorithm can be performed to equalize the signal, and a constellation recovery algorithm can be performed to identify a constellation index corresponding to the QAM constellation. The blind equalization algorithm can be altered based on the identified constellation index. The invention advantageously allows for relatively efficient and relatively reliable equalization of signals transmitted with an unknown QAM constellation.

REFERENCES:
patent: 6011814 (2000-01-01), Martinez et al.
patent: 6842495 (2005-01-01), Jaffe et al.
patent: 7006565 (2006-02-01), Endres et al.
patent: 2009/0059960 (2009-03-01), Li
Al-Dhahir, Naofal et al., “Efficient Computation of the Delay-Optimized Finite-Length MMSE-DFE,”IEEE Transactions on Signal Processing, vol. 44, No. 5, May 1996, pp. 1288-1292.
Godard, Dominique N., “Self-Recovering Equalization and Carrier Tracking in Two-Dimensional Data Communication Systems,” IEEE Transactions on Communications, vol. Com-28, No. 11, Nov. 1980.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Efficient blind equalization for quadrature amplitude... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Efficient blind equalization for quadrature amplitude..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient blind equalization for quadrature amplitude... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2732222

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.