Polar modulation transmission apparatus

Details Polar modulation transmission apparatus Polar modulation transmission apparatus

2008-08-04

2011-11-15

Trinh, Sonny (Department: 2618)

Telecommunications

Transmitter

Noise or interference elimination

C455S115100, C455S127200

Reexamination Certificate

active

08060034

ABSTRACT:
By compensating for a detection result of the detector in feedback control of output power of the power amplifier, the polar modulation transmission apparatus is able to realize accurate transmission power control. Polar modulation transmission apparatus100has detector106that detects output power of power amplifier103, PAPR calculating section131that calculates the PAPR of the spread modulated signal, compensation value generating section134that outputs a compensation value corresponding to the calculated PAPR and an arithmetic operator that performs an arithmetic operation using the compensation value and a detection result obtained by detector106. By this means, it is possible to compensate for the sensitivity of detector106(measurement sensitivity) that changes depending on the βparameter and mode and make the sensitivity of detector106(measurement sensitivity) virtually constant.

REFERENCES:
patent: 7024608 (2006-04-01), Kurokami
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patent: 7348844 (2008-03-01), Jaenecke
patent: 7496334 (2009-02-01), Saito
patent: 7551687 (2009-06-01), Ode et al.
patent: 7792200 (2010-09-01), Molander
patent: 2002/0154708 (2002-10-01), Rouphael
patent: 2010/0029224 (2010-02-01), Urushihara et al.

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