Modern Quadrature Amplitude Modulation: Principles and Applications for Fixed and Wireless Channels
Modern Quadrature Amplitude Modulation: Principles and Applications for Fixed and Wireless Channels
Digital Communication Receivers: Synchronization, Channel Estimation, and Signal Processing
Digital Communication Receivers: Synchronization, Channel Estimation, and Signal Processing
Adaptive DFE for GMSK in indoor radio channels
IEEE Journal on Selected Areas in Communications
SER Computation in M-QAM Systems with Phase Noise
Wireless Personal Communications: An International Journal
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The paper presents an analysis of the impact of Local Oscillators (LO) phase noise on the performance of digital transmission systems. Using an efficient phase noise model, we study degradations induced by phase noise and Additive White Gaussian Noise (AWGN) on a carrier recovery system combined to high order Quadrature Amplitude Modulations (QAM). Simulation results show that an optimum trade-off between AWGN and phase noise robustness for the loop bandwidth can be determined. In order to compare simulated and analytical performance, a new general expression of the bit error probability is developped for square QAM in the presence of phase noise over Gaussian channel. Furthermore, novel decision areas related to Quadrature Amplitude Modulations are determined in order to improve the performance of the carrier recovery algorithm in the presence of phase noise and frequency offset.