Maximum Likelihood Carrier Phase Recovery for Linear Suppressed-Carrier Digital Data Modulations

摘要: The problem of ML estimation the Phase a general data-modulated carrier is considered. shortcomings current iterative approaches to are pointed out, and correct conceptual approach proposed. true estimator then obtained found be nonimplementable. However, by specializing limits high low SNR, shown reduce implementable DA NDA estimators, respectively. receiver's performance in terms phase tracking symbol error probability can analyzed, even effects past decision errors on system assessed. For circular signal constellations, receiver has simple totally linear structure which easy implement. equivalent common loops. Our emphasis here explicit computation estimate from received leads detection strategies do not require loop VCO for coherent detection.