Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2006-01-03
2006-01-03
Phu, Phuong (Department: 2631)
Pulse or digital communications
Receivers
Angle modulation
C375S372000, C375S260000, C329S304000
Reexamination Certificate
active
06983029
ABSTRACT:
In general, one embodiment of the invention relates to a method for detecting data bits and estimating the channel reliability of each carrier. The detection method comprises (i) computing a complex phase difference between a current symbol and a previous symbol, (ii) separating a real value component (R) from a corresponding imaginary value component (I) forming the complex phase difference, (iii) determining at least one boundary constraint line of a complex phase map for a selected demodulation scheme, and computing an arithmetic combination of the real value component and the corresponding imaginary value component to detect whether a series of bits falls within a selected region of the complex phase map defined by the at least one boundary constraint line. Over N symbols propagating over a carrier, including the current symbol and the previous symbol, the channel estimation counts a number of symbols (less than N but greater than a threshold) that fall within an estimated area of the complex phase map. The estimated area is bound by boundary constraint lines based on a parameterized real value component.
REFERENCES:
patent: 4503545 (1985-03-01), Bremer et al.
patent: 4566100 (1986-01-01), Mizuno et al.
patent: 6055281 (2000-04-01), Hendrickson et al.
patent: 6381288 (2002-04-01), He et al.
patent: 6393599 (2002-05-01), Chan
patent: 6487255 (2002-11-01), Arslan et al.
patent: 6683921 (2004-01-01), Shiraishi et al.
patent: 6735255 (2004-05-01), Smart et al.
patent: 2004/0008618 (2004-01-01), Shirakata et al.
patent: 3433962 (1986-03-01), None
patent: 0866580 (1998-09-01), None
patent: 0987863 (2000-03-01), None
Porath, J-E, et al., “Improved Technique for Quick Error Rate Estimation of Multi-Dimensional Communications Schemes” IEE Proceedings: Communications, Institution of Electrical Engineers, GB, vol. 146, NR. 6, Page(s) 343-346, XP006013250, ISSN: 1350-2425.
Alavi Hossein
Chini Ahmad
Kilani Mehdi Tavassoli
Omidi Mohammad Javad
Blakely , Sokoloff, Taylor & Zafman LLP
Maxim Integrated Products Inc.
Phu Phuong
LandOfFree
Blind channel estimation and data detection for PSK... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blind channel estimation and data detection for PSK..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blind channel estimation and data detection for PSK... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3588511