Adaptive modulation/demodulation method and radio...

Telecommunications – Transmitter and receiver at separate stations – Frequency or phase modulation

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S017000, C370S206000, C370S207000, C370S465000, C375S261000, C375S298000

Reexamination Certificate

active

07363007

ABSTRACT:
Adaptive modulation/demodulation method in a radio communication system is provided. A modulation multi-level number in a transmission device and a demodulation multi-level number in a reception device are judged independently from each other according to a propagation condition and communication is performed by controlling the likelihood when the multi-level numbers of the transmission side and the reception side are different. The reception device can perform operation by controlling likelihood information on lower bit of the multi-level modulation even when the modulation multi-level number and the demodulation multi-level number used at the transmission side are different. Moreover, the transmission device and the reception device independently decide the modulation multi-level number and the demodulation multi-level number, thereby following an instantaneous propagation fluctuation and improving the throughput.

REFERENCES:
patent: 6359934 (2002-03-01), Yoshida
patent: 6738646 (2004-05-01), Miyoshi et al.
patent: 2004/0203992 (2004-10-01), Yun
patent: WO 00/62498 (2000-10-01), None
patent: WO 01/08369 (2001-02-01), None
patent: WO 02/091695 (2002-11-01), None
Shinya Otsuki, “Performance of Modulation Level Controlled Adaptive Modulation Systems” (Electronic Information Society Journal B-II, vol. J78-B-II No. 6, pp. 435-444, Jun. 1995).

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

Adaptive modulation/demodulation method and radio... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive modulation/demodulation method and radio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive modulation/demodulation method and radio... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2768786

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