Soft demapping for MIMO decoding

Details Soft demapping for MIMO decoding Soft demapping for MIMO decoding

2007-11-30

2011-12-13

Payne, David C. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S354000, C370S491000, C370S500000

Reexamination Certificate

active

08077788

ABSTRACT:
A look-up table having distance information corresponding to a distance between a potential candidate symbol and a most proximate competing symbol for each bit of a plurality of potential candidate symbols is provided for a given modulation type. A MIMO decoder will obtain multiple candidate symbols that are provided in a maximum likelihood solution and that correspond to each of the antenna layers of a MIMO wireless communication system. A first candidate symbol is selected from the plurality of candidate symbols, wherein the first candidate symbol corresponds to a first potential candidate symbol of the candidate symbols provided in the look-up table. Distance information is obtained from the look-up table for each bit of the first potential candidate symbol. Likelihood indicium is determined for each bit of the first candidate symbol as a function of the distance information that was obtained for each bit.

REFERENCES:
patent: 2005/0018789 (2005-01-01), Jia et al.
patent: 2006/0018415 (2006-01-01), Jung et al.
patent: 2006/0045200 (2006-03-01), Bocquet
Notice of Allowance and Fee(s) Due, mailed Dec. 17, 2010 for U.S. Appl. No. 11/948,644.

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