Method and system for improving channel estimation in a...

Details Method and system for improving channel estimation in a... Method and system for improving channel estimation in a...

2007-08-27

2011-10-04

Ha, Dac (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S259000, C375S316000, C370S343000, C370S345000, C370S347000, C370S286000, C370S289000, C370S290000

Reexamination Certificate

active

08031786

ABSTRACT:
The present invention discloses a method for improving channel estimation in a communications network. The method comprises estimating first channel characteristics of first sub-carriers carrying pilot signals; obtaining second channel characteristics of second sub-carriers carrying data using the first channel characteristics of the first sub-carriers with an algorithm that comprises selecting a first process from the group consisting of two-dimensional interpolation and extrapolation channel estimation algorithms, breaking down the first process, according to a predetermined rule, into second processes selected from the group consisting of one-dimensional interpolation and extrapolation channel estimation algorithms, and calculating the second channel characteristics of the second sub-carriers carrying data; demodulating and decoding the data carried in the second sub-carriers using the second channel characteristics; obtaining channel information about the first and the second channel characteristics from demodulating and decoding the data; and revising the first and the second channel characteristics using the channel information.

REFERENCES:
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patent: 2004/0184399 (2004-09-01), Chiou
patent: 2005/0176436 (2005-08-01), Mantravadi et al.
patent: 2005/0243791 (2005-11-01), Park et al.
patent: 2006/0165128 (2006-07-01), Peake et al.
patent: 2006/0209883 (2006-09-01), Suzuki
patent: 2006/0222097 (2006-10-01), Gupta et al.
patent: 2006/0233268 (2006-10-01), Frank et al.
patent: 2008/0084942 (2008-04-01), Hosseinian
PCT International Search Report and Written Opinion of the International Searching Authority, Mar. 6, 2008.

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