Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2006-12-19
2006-12-19
Andereson, Matthew (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S415000, C455S418000, C455S567000, C375S148000, C375S150000, C375S227000
Reexamination Certificate
active
07151948
ABSTRACT:
A receiver of a mobile station or a base station in radio communications is formed by a correlation unit for generating a delay profile for specifying paths by taking correlations by using replica signals for a received pilot signal, and a path selection unit for comparing a power level of each path in the delay profile with a threshold determined according to an index value regarding a communication state, selecting paths for which a comparison result satisfies a prescribed condition as valid paths, and outputting a selected delay profile formed by the valid paths as a channel estimation value.
REFERENCES:
patent: 6151507 (2000-11-01), Laiho et al.
patent: 6229842 (2001-05-01), Schulist et al.
patent: 2003/0236074 (2003-12-01), Ishii et al.
patent: 2004/0198471 (2004-10-01), Deeds
patent: 2005/0271122 (2005-12-01), Jonsson
patent: 1309843 (2001-08-01), None
Ishiguro Takayuki
Ishii Hiroyuki
Moon Sung Uk
Yamada Mayu
Andereson Matthew
Dao Minh
NTT DoCoMo Inc.
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