Multi-carrier communication system

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S259000, C375S219000, C375S347000, C375S340000, C370S203000, C370S208000, C370S210000, C370S335000, C370S342000, C370S380000

Reexamination Certificate

active

08036285

ABSTRACT:
The present application relates to a communication method in which a succession of time domain symbols (TDS) are transmitted by a transmitter to one or more receivers. Each time domain symbol has a plurality of signals which are transmitted in parallel by the transmitter. The signals may comprise data signals or pilot signals. At the transmitter, a set of pilot signals assigned to a given time domain symbol is provided with information about a phase vector applied to the time domain symbol. The phase vector is preferably selected with consideration of the reduction in the ratio of peak-to-average-power which can be achieved when the vector is applied to the time domain symbol. Transmitters and receivers for use in the communication method are also provided. The invention is particularly application to OFDM communication systems.

REFERENCES:
patent: 2002/0018483 (2002-02-01), Kuwabara et al.
patent: 2004/0146003 (2004-07-01), Schaefer et al.
patent: 2004/0156309 (2004-08-01), Chadha et al.
patent: 2006/0088112 (2006-04-01), Das et al.
patent: 2006/0274868 (2006-12-01), Chen et al.
patent: 2004147126 (2004-05-01), None
Search report issued on priority European application No. 05256598.3.
UK Patent Application GB 2 409 135 A, (Samsung Electronics Co. Ltd) dated of publication 16.15.2005, Application No. 0328895.8, date of Filing Dec. 12, 2003.
Ning Chen and G. Tony Zhou; “Peak-To-Average Power Ratio Reduction in OFDM with Blind Selected Pilot Tone Modulation”, Acoustics, Speech, and Signal Processing, 2005. IEEE International Conference on Philadelphia, Pennsylvania, USA Mar. 18-23, pp. 845-848; XP-010793954.
A.D.S. Jayalath and C. Tellambura; “A blind SLM receiver for PAR-reduced OFDM”, IEEE Vehicular Technology Conferences, pp. 219-222, Vancouver, Canada, Sep. 24 to 28, 2002.
A.D.S. Jayalath and C. Tellambura; SLM and PTS Peak-Power Reduction of OFDM Signals Without Side Information, 2000.
S.H. Müller and J.B. Huber,OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences, pp. 368-369, @IEE 1997.
R.W. Bäuml, R.F.H. Fischer and J.B. Huber,Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping, pp. 2056-2057, @IEE 1996.
Office Action dated May 10, 2011 in corresponding Japanese application No. 2006-290328.
Takeo Fujii, et al., “Weighting Factor Estimation Methods for Partial Transmit Sequences OFDM to Reduce Peak Powere”, IEICE transactions on communications, The Institute of Electronics, Information and Communication Engineers, Jan. 1, 2002, pp. 221-230.
Katsumi Yamashita, et al. “Peak Power Reduction for OFDM Signal and Phase Rotation Transition by Pilot Signal”, Technical Report of IEICE, The Institute of Electronics, Information and Communication Engineers, Jan. 17, 2003, pp. 15-19, CAS2002-127 (translation/Cited Document 2 (Chapter 3.2).

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

Multi-carrier communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-carrier communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-carrier communication system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4297685

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