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In this paper, a novel phase noise estimation method (PNE) for multi-level modulations is proposed based on local optimization (LO PNE). The effectiveness of this method is demonstrated and discussed in a 200G bit/s coherent transmission system. It has been proved, the usage of throwing-point (TP) test rotation and convex programming in LO_PNE reduce the complexity of phase estimation for arbitrary...
In this paper we present a decision feedback channel estimation way for the mobile satellite communication system in order to improve the bit error performance. The transmission is disturbed not only by shadowing and multipath effects and additive white Gaussian noise, but also by the weather attenuation. The conventional Least Square(LS) is not well suited to detect the transmitter sequence, whereas...
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