Pulse or digital communications – Pulse code modulation – Differential
Reexamination Certificate
2006-01-10
2006-01-10
Tse, Young T. (Department: 2637)
Pulse or digital communications
Pulse code modulation
Differential
C375S283000, C375S330000, C341S143000
Reexamination Certificate
active
06985531
ABSTRACT:
A method and apparatus that differentially encodes and decodes data symbols in dual domains is taught. Data packets are encoded, transmitted, and decoded during a plurality of symbol intervals on a plurality of sub-carriers. Encoding and decoding are accomplished across both the time and frequency domains such that the minimum number of carrier states are employed as reference only states that do not encode a symbol of data in and of themselves. A rule of adjacency is followed, both across time and frequency, so that decorrelation is minimized. Any modulation scheme that is applicable to differential encoding and decoding can be utilized. Communication systems that couple via radio waves, through metallic conductors, or over fiber optic paths can be employed.
REFERENCES:
patent: 5646935 (1997-07-01), Ishikawa et al.
patent: 5771224 (1998-06-01), Seki et al.
patent: 6058101 (2000-05-01), Huang et al.
patent: 6061327 (2000-05-01), Demoulin et al.
patent: 6111919 (2000-08-01), Yonge, III
patent: 6115354 (2000-09-01), Weck
patent: 6363084 (2002-03-01), Dejonghe
patent: 2002/0150036 (2002-10-01), Weerackody
patent: 0 920 163 (1999-06-01), None
patent: 0 991 237 (2000-04-01), None
patent: WO 99/53667 (1999-10-01), None
Van Nee, Prasad, ODFM for Wireless Multimedia Communications pp. 107-116, Artech House (2000).
Brown Daniel R.
CynTrust Communications, Inc.
Dan Brown Law Office
Tse Young T.
LandOfFree
Dual domain differential encoder/decoder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual domain differential encoder/decoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual domain differential encoder/decoder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3565993