Communications: electrical – Continuously variable indicating – Using a particular modulation
Reexamination Certificate
2007-09-04
2007-09-04
Hofsass, Jeffery (Department: 2612)
Communications: electrical
Continuously variable indicating
Using a particular modulation
C340S870170, C340S870190, C340S854400, C340S870070, C367S081000, C367S082000
Reexamination Certificate
active
11093120
ABSTRACT:
Methods and systems employing combined source-channel coding for multi-carrier modulation (MCM). In some embodiments, a described method comprises: estimating channel gain to noise ratio (CGNR) as a function of frequency bin; determining MCM parameters that minimize distortion of one or more telemetry signals; generating a communications signal using the MCM parameters, and transmitting the communications signal via a communications channel. The MCM parameters may be determined by minimizing a telemetry signal distortion measure subject to CGNR and a transmit power constraint. The MCM parameters may further account for differing fidelity requirements when multiple telemetry signals are being transmitted.
REFERENCES:
patent: 4293936 (1981-10-01), Cox et al.
patent: 5903608 (1999-05-01), Chun
patent: 2003/0015319 (2003-01-01), Green et al.
patent: 2004/0156264 (2004-08-01), Gardner et al.
PCT International Search Report for International Application No. PCT/US05/32709, mailing date: Mar. 30, 2006, 4 pages.
Zeeng, Haitao et al., “Robust Image And Video Transmission Over Spectrally Shaped Channels Using Multicarrier Modulation,” IEEE Transaction on Multimedia, vol. 1, No. 1, Mar. 1999, pp. 88-103.
Bedrosian, Edward, “Weighted PCM,” IEEE Transactions On Information Theory, vol. 44, No. 4, pp. 45-49, Mar. 1958.
Bingham, John A.C., “Multicarrier Modulation For Data Transmission: An Idea Whose Time Has Come,” IEEE Communications Magazine, May 1990, pp. 5-14.
Campello, Jorge, “Optimal Discrete Bit Loading For Multicarrier Modulation Systems,” IEEE Symp., Cambridge, MA., Aug. 16-21, 1988, p. 193.
Chow, Peter S., et al., “A Practical Discrete Multitone Transciver Loading Algorithm For Data Transmission Over Spectrally Shaped Channels,” IEEE Transactions On Communications, vol. 43, No. 2/3/4, Feb.-Apr. 1995, pp. 773-775.
Ho, Keang-Po, et al., “Transmission Of Analog Signals Using Multicarrier Modulation: A Combined Source-Channel Coding Approach,” IEEE Transactions On Communications, vol. 44, No. 11, Nov. 1996, pp. 1432-1443.
Johnson, Don H., et al., “Optimizing Physical Layer Data Transmission For Minimal Signal Distortion,” Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003, 4 pgs.
Krongold, Brian S., et al., “Computationally Efficient Optimal Power Allocation Algorithms For Multicarrier Communication Systems,” IEEE Transactions On Communications, vol. 48, No. 1, 2000, pp. 23-27.
Sinanovic, Sinan, et al., “Data Communication Along The Drill String Using Acoustic Waves,” Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003, 4 pgs.
Zheng, Haitao, et al., “Robust Image And Video Transmission Over Spectraly Shaped Channels Using Multicarrier Modulation,” IEEE Transactions On Multimedia, vol. 1, No. 1, Mar. 1999, pp. 88-103.
Gardner Wallace R.
Johnson Don Herrick
Memarzadeh Mahsa
Halliburton Energy Service,s Inc.
Hofsass Jeffery
Krueger Iselin LLP
Yacob Sisay
LandOfFree
Joint source-channel coding for multicarrier modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Joint source-channel coding for multicarrier modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Joint source-channel coding for multicarrier modulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3763538