Quadrature amplitude modulation synchronization method

Quadrature amplitude modulation trellis coded modulation...

Quadrature amplitude modulation type digital radio communication

Quadrature amplitude modulator with distortion compensation

Quadrature compensation for orthogonal signal channels

Quadrature demodulation circuit capable for canceling offset

Quadrature demodulator

Quadrature demodulator

Quadrature demodulator for compensating for gain and phase...

Quadrature detector and amplitude error correction method for qu

Quadrature error reduction for QAM modulated up or down...

Quadrature filter with real conversion

Quadrature frequency changer, tuner and modulator

Quadrature frequency doubler with adjustable phase offset

Quadrature frequency doubling system

Quadrature gain and phase imbalance correction in a receiver

Quadrature imbalance estimation using unbiased training...

Quadrature LINC transmission method and apparatus

Quadrature measurement and calibration of a vector modulator

Quadrature mirror filter banks and method