Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2002-08-30
2009-10-27
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S265000, C375S340000, C375S341000, C714S792000, C714S794000, C714S795000, C714S796000, C714S763000
Reexamination Certificate
active
07609777
ABSTRACT:
A communication device comprising an ML-APP detector coupled to at least two antennas. The ML-APP detector comprises at least one Hx unit coupled to at least one LLR unit. The Hx unit generates a portion of all possible symbols that can be received and transfers each generated symbol candidate to the LLR unit which performs a conversion operation on the transferred symbol candidate to generate another symbol candidate that is not part of the special portion. In this manner all of the possible symbol candidates are obtained by the LLR unit. The LLR unit compares the symbol candidates to a received symbol to perform a cost calculation. The symbol candidate yielding the lowest cost from the cost calculations of all possible symbol candidates is selected as the best candidate. APP decoding is then performed on the selected candidate using soft information associated with the selected candidate which soft information is generated by the LLR unit.
REFERENCES:
patent: 5081651 (1992-01-01), Kubo
patent: 5263053 (1993-11-01), Wan et al.
patent: 5675590 (1997-10-01), Alamouti
patent: 6144711 (2000-11-01), Raleigh et al.
patent: 6289000 (2001-09-01), Yonge, III
patent: 6301317 (2001-10-01), Ben-Eli
patent: 6487255 (2002-11-01), Arslan et al.
patent: 6556634 (2003-04-01), Dent
patent: 6857101 (2005-02-01), Levy
patent: 6891897 (2005-05-01), Bevan et al.
patent: 6944242 (2005-09-01), Yakhnich et al.
patent: 6944247 (2005-09-01), Whetsel
patent: 6977977 (2005-12-01), Dubrovin et al.
patent: 7035354 (2006-04-01), Karnin et al.
patent: 2002/0051501 (2002-05-01), Demjanenko et al.
patent: 2002/0161560 (2002-10-01), Abe et al.
patent: 2003/0031278 (2003-02-01), Kang et al.
patent: 2003/0086366 (2003-05-01), Branlund et al.
patent: 2003/0112901 (2003-06-01), Gupta
patent: 2008/0095121 (2008-04-01), Shattil
patent: 2008/0144746 (2008-06-01), Waters et al.
patent: 0905920 (1999-03-01), None
patent: 1 133 097 (2001-09-01), None
patent: 6232769 (1994-08-01), None
patent: 11168453 (1996-06-01), None
“A Comparison of Optimal and Sub Optimal MAP Decoding Algorithms Operating in the Log Domain”, Robertson et al, 1995 IEEE International Conference on Communications, 1995. ICC 95 Seattle, Gateway to Globalization, Jun. 18-22, 1995, pp. 1009-1013 vol. 2.
“Reliability Basics Maximum Likelihood Function”, HotWire: The eMagazine for the Reliability Professional, Issue 33, Nov. 2003, Copyright 1992-2006, pp. 1-5.
Vikalo H et al: “Low-complexity iterative detection and decoding of multi-antenna systems employing channel and space-time codes” Conference Record of the 36th. Asimolar Conference on Signals, Systems, & Computers, Pacific Groove, CA, Nov. 3-6, 2002, Asimolar Conference on Signals, Systems and Computers, New York, NY: IEEE, US, vol. 1 of 2. Conf. 36. 3 Nov. 2002 pp. 294-298 XP010638219 ISBN: 0-7803-7576-9 p. 295, left-hand column, line 1 - line 5, p. 295, right-hand column, line 18-Line 37, p. 296, right-hand column, line 6-line 30.
The Viterbi Algorithm by G. David Forner, Jr., pp. 268-278—excerpt of Proceedings of the IEEE, vol. 61, No. 3, Mar. 1973.
Alcatel-Lucent USA Inc.
Carlson Gaskey & Olds P.C.
Liu Shuwang
Wong Linda
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