Title:
CONSTELLATION DESIGN AND OPTIMIZATION IN NON-LINEAR SATELLITE CHANNELS
Document Type and Number:
WIPO Patent Application WO/2015/199783
Kind Code:
A3
Abstract:
A method for optimizing a constellation for M-ary amplitude phase shift keying (M-APSK) that provides signal modulation for transmitting a series of digital bits in an analog signal by a transmitter to be received by a receiver over a communications channel. The method includes identifying symbol-wise mutual information of a transmitted constellation, where the symbol-wise mutual information includes a conditional probability density function. The method identifies an unconstrained capacity that defines an ultimate performance limit of the constellation, and minimizes a difference between a rate of the symbol-wise mutual information and a rate of the unconstrained capacity to determine the number of rings, the number of symbols in each ring and the ring ratio in the constellation.
Inventors:
LIU DANIEL N (US)
Application Number:
PCT/US2015/024137
Publication Date:
February 25, 2016
Filing Date:
April 02, 2015
Export Citation:
Assignee:
NORTHROP GRUMMAN SYSTEMS CORP (US)
International Classes:
H04L27/34
Other References:
YAN KEQIAN ET AL: "Genetic algorithm aided gray-APSK constellation optimization", 2013 9TH INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING CONFERENCE (IWCMC), IEEE, 1 July 2013 (2013-07-01), pages 1705 - 1709, XP032478660, ISBN: 978-1-4673-2479-3, [retrieved on 20130820], DOI: 10.1109/IWCMC.2013.6583813
RICCARDO DE GAUDENZI ET AL: "Turbo-coded APSK modulations design for satellite broadband communications", INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, JOHN WILEY & SONS, CHICHESTER, GB, vol. 24, no. 4, 1 July 2006 (2006-07-01), pages 261 - 281, XP008134566, ISSN: 1542-0973, [retrieved on 20060519], DOI: 10.1002/SAT.841
REO KOBAYASHI ET AL: "Throughput Comparisons of 32/64APSK Schemes Based on Mutual Information Considering Cubic Metric", IEICE TRANSACTIONS ON COMMUNICATIONS, COMMUNICATIONS SOCIETY, TOKYO, JP, vol. E95-B, no. 12, 1 December 2012 (2012-12-01), pages 3719 - 3727, XP001581103, ISSN: 0916-8516, DOI: 10.1587/TRANSCOM.E95.B.3719
RICCARDO DE GAUDENZI ET AL: "Turbo-coded APSK modulations design for satellite broadband communications", INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, JOHN WILEY & SONS, CHICHESTER, GB, vol. 24, no. 4, 1 July 2006 (2006-07-01), pages 261 - 281, XP008134566, ISSN: 1542-0973, [retrieved on 20060519], DOI: 10.1002/SAT.841
REO KOBAYASHI ET AL: "Throughput Comparisons of 32/64APSK Schemes Based on Mutual Information Considering Cubic Metric", IEICE TRANSACTIONS ON COMMUNICATIONS, COMMUNICATIONS SOCIETY, TOKYO, JP, vol. E95-B, no. 12, 1 December 2012 (2012-12-01), pages 3719 - 3727, XP001581103, ISSN: 0916-8516, DOI: 10.1587/TRANSCOM.E95.B.3719
Attorney, Agent or Firm:
MILLER, John, A. (PLC42690 Woodward Ave.,Ste. 30, Bloomfield Hills MI, US)
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