-constant-envelop .NON-LINEAR CONSTANT ENVELOP MODULATOR AND TRANSMIT ARCHITECTURE

摘要

Schedule for wireless (無線) transmission system - the supply or the like envelope modulator (modulator constant envelop) and Transport Architecture (transmit architecture), and supplies the method of operating (method). Schedule - the envelope modulator (modulator constant envelop) are due to a differential (差動) encoder statue elements (in-phase component) and a 90 ° difference between the modulation signals contained the (differential encoder), and the transmission of receiving data to be transmitted to produce a component (quadrature component) and the like. In order to give a special appearance to the modulation statue (同 相) elements as the elements according to the difference between 90 ° and the like, it passes through the digital filter. Statue of the modulation signal (同 相) component (in-phase component) and 90 ° element due to the difference (quadrature component) such as the phase information and amplitude information, and I of the sides, in which event the modulation-in envelope statue (同 相) modulated signal, and constant - the envelope for the purpose of supplying a modulation signal, and is supplied an amplitude modulation of envelope signal or the like by a 90 ° difference, uniform-the envelope modulator (constant invelop modulator) is an amplitude modulation information from the modulation signal (amplitude modulation remove the information). As a result, looking constant-in envelope statue (同 相) modulation signal and the modulation signal by a 90 ° difference, etc., uniform-are combined in the envelope radio (無線) frequency (radio frequency) for transmission of a phase modulated signal. To boost the modulated signal to a suitable output power level for transmission via the non-linear (非 線形) power amplifier (non-linear power amplifier), constant-in envelope phase modulated signal (constant envelop phase modulation signal) is supplied. Then, back to be put purpose the amplitude information to the signal, the constant-amplitude-modulated part of the point after (後) of the amplitude of the envelope phase-modulated signal, in a non-linear power amplifier (non-linear power amplifier), the modulated signal (AM content) is constant-envelope is fed back to the phase-modulated signal. The present invention according to the schedule-by etc. the envelope modulator (modulator constant envelop) and Transport Architecture (transmit architecture), the overall configuration is operated in the efficiency (efficiency) non-linear (non-linear) mode with.