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This paper proposes a joint carrier recovery and blind decision feedback equalizer (DFE) based on stop-and-go MCMA and decision-direct least-mean-square (SG-MCMA-DD-LMS) algorithm. The equalizer initially operates in modified constant modulus algorithm (MCMA) mode under stop-and-go principle to compensate the channel distortion and acquire phase offset. When the channel eye is opened equalizer switches...
Investigating the blind roll-off factor estimation of QAM signals has great significance in non-cooperative communication. In this paper we analyze and simulate the effects of roll-off factor error and the mismatched filter order on the receiving performance for the receiver with symbol timing recovery (STR) or without receiving processing(without STR). The results show that the effect is very small...
In non-cooperative communication we need to estimate of symbol rate blindly. Hence, it is necessary to correct symbol rate offset properly and estimate its effects on the receiving performance. In the paper, the symbol timing recovery loop using an acquisition-aiding technique (that is, adaptively adjusting loop bandwidth) can capture symbol rate offset of 1% with the help of the lock detector for...
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