Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Reexamination Certificate
2006-11-02
2010-11-30
Ghayour, Mohammad H (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
C375S280000, C375S281000, C375S282000, C375S283000, C375S284000, C375S316000, C375S329000, C375S330000, C375S331000, C375S332000, C375S333000, C375S340000, C375S346000, C375S348000, C370S215000
Reexamination Certificate
active
07844011
ABSTRACT:
An apparatus and method for improving a symbol error rate of an M-ary phase shift keying (M-PSK) system having a quadrature error are provided. The apparatus includes: a conversion parameter detector that detects a conversion parameter and converts a symbol decision region using the quadrature error and at least one pair of first received symbols; and a converter & determiner converting a pair of second received symbols using the detected conversion parameter, and determining a transmission symbol according to a symbol of the converted pair of second received symbols. An increase in a symbol error rate due to the quadrature error can be prevented and the quadrature error can be easily estimated.
REFERENCES:
patent: 6075408 (2000-06-01), Kullstam et al.
patent: 6334203 (2001-12-01), Inagawa
patent: 6426949 (2002-07-01), Zhou et al.
patent: 6717993 (2004-04-01), Shiraishi et al.
patent: 7109787 (2006-09-01), Meyer
patent: 2002/0064233 (2002-05-01), Terreault et al.
patent: 2004/0109516 (2004-06-01), O'Shea
patent: 2004-140697 (2004-05-01), None
Notice of Allowance dated Nov. 29, 2007 issued from the Korean Patent Office.
Park, S., “SEP Performance of Coherent MPSK Over Fading Channels in the Presence of Phase/Quadrature Error and I-Q Gain Mismatch.” Jul. 2005.IEEE Transactions on Communications, vol. 53, No. 7., pp. 1088-1091.
Park, J., “Performance Analysis of Symbol Error Probability for MPSK with an I-Q Unbalance over a Rician Fading Channel.” Apr. 2005.IEICE Trans. Commun., vol. E88-B, No. 4, pp. 1702-1704.
Park, S., “An Alternative Expression for the Symbol-Error Probability of MPSK in the presence of I/Q Unbalance.” Dec. 2004.IEEE Transactions on Communications, vol. 52, No. 12, pp. 2079-2081.
Simon, M., “Some New Twists to Problems Involving the Gaussian Probability Integral.” Feb. 1998.IEEE Transactions on Communications, vol. 46, No. 2, pp. 200-210.
Cho Pyung Dong
Lee Hyeong Ho
Park Jin A
Park Seung Keun
Electronics and Telecommunications Research Institute
Ghayour Mohammad H
Ladas & Parry LLP
Vlahos Sophia
LandOfFree
Apparatus and method for improving symbol error rate... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for improving symbol error rate..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for improving symbol error rate... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4236031