US Patent No: 8,194,787
Number of patents in Portfolio can not be more than 2000
Communication system, transmitter, communication method, and transmitter detection method
Stats
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Jun 5, 2012
Issued date -
Oct 11, 2007
filing date -
11/907,347
serial no -
In Force
status
Importance
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Abstract
Disclosed is a communication system, having: a transmitter including: a first frequency converter converting a frequency of a provided signal to a first frequency band to generate a first signal and converting the frequency of the provided signal to a second frequency band to generate a second signal, the second frequency band having a given frequency difference against the first frequency band; and a combiner combining the first signal and the second signal to output a transmission signal, and a receiver including: a second frequency converter converting the transmission signal to a frequency-shifting signal shifted by the given frequency difference; a first multiplier multiplying the transmission signal and the frequency-shifting signal together to output a multiplied signal; a filter extracting a baseband signal from the multiplied signal; and a detector detecting significant information from the baseband signal.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 2006/0256,884 Radio receiver and radio receiving method | 12 | 2006 | |
| 2007/0253,394 Cognitive radio system | 14 | 2007 | |
| 2008/0153,553 Radio communication terminal and radio communication system | 3 | 2007 | |
| 2010/0081,386 COMMUNICATION METHOD, SYSTEM, TRANSMITTER, AND RECEIVER | 1 | 2009 | |
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| 5,241,544 Multi-channel TDM communication system slot phase correction | 35 | 1991 | |
| 5,343,499 Quadrature amplitude modulation synchronization method | 60 | 1992 | |
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| 5,446,421 Local oscillator phase noise cancelling modulation technique | 107 | 1994 | |
| 5,805,242 Carrier independent timing recovery system for a vestigial sideband modulated signal | 55 | 1996 | |
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| 6,721,267 Time and bandwidth scalable slot for mobile data system | 6 | 2001 | |
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| 6,366,621 Method of estimating pilot signal phase in a digitally modulated RF signal | 6 | 1998 | |
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| 4,310,806 Device for detecting linear displacement | 20 | 1979 | |
| 2006/0198,451 DISTANCE DIVISION MULTIPLEXING | 1 | 2005 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 5, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 5, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 5, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
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