Phase error compensation system for quadrature phase modulated carrier - uses correction signals obtained from control signals related to sum of sine and cosine of phase errors

摘要

The phase error compensation system detects the orthogonal phase error at the transmission and reception side, the transmitted signal (s(t)) subjected to quadrature demodulation to provide 2 signal components (q(t),i(t)). A correction signal obtained from the product of a control signal (k,k') and one signal component (q(t),i(t)) is subtracted from each signal component (q(t),i(t)). The control signals (k,k') are provided by the sum of the sines of the transmission and reception phase errors and by the sum of the cosines of the transmission and reception phase errors. ADVANTAGE - Maintains low orthogonal phase error.