The paper analyzes the interference rejection of Quadrature amplitude modulation signals in the presence of carrier phase jitter, sinusoidal interference and white Gaussian noise.
The architecture of FM quadrature demodulation was provided. On the universal IF digitalization hardware platform, FM waveform was demodulated in base-band together with SSB and FM.
The target of the communication system flat is modeling and calculating to modulation and demodulation of seven kinds of signals:AM, FM, SSB, 2ASK, 2FSK, 2PSK, 2QPSK.