Pulse or digital communications – Testing – Signal noise
Reexamination Certificate
2004-10-05
2009-11-24
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Testing
Signal noise
C375S340000, C375S346000, C375S349000
Reexamination Certificate
active
07623569
ABSTRACT:
A method and apparatus for estimating interference and noise power in an orthogonal frequency division multiplexing/orthogonal frequency division multiple access/discrete multi-tone (OFDM/OFDMA/DMT) system is disclosed. A correlator correlates a plurality of sub-carriers with a preset reference sequence on an element-by-element basis and outputs a result of the correlation. A signal noise producer calculates a difference between a correlation value associated with each of the plurality of sub-carriers output from the correlator and a correlation value produced from at least one adjacent sub-carrier and outputs a result of the calculation. An interference and noise power producer produce interference and noise power from the difference between the correlation values calculated by the signal noise producer.
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Chang Jae-Hwan
Kim Chan-Young
Park Yun-Sang
Sung Sang-Hoon
Joseph Jaison
Liu Shuwang
Samsung Electronics Co,. Ltd.
The Farrell Law Firm, LLP
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