Huawei Technologies Co., Limited

Dmitry Anatolievich Dolgikh

Huaping Shi

Plotnikov Pavel

Victor Ivanovich Dzhigan

Anton Igorevich Smekalov

Wanyang Wu

This application provides a signal processing method and apparatus, and a coherent receiver. The signal processing method includes: obtaining P real-number signals; performing at least number theoretic transform NTT processing on the P real-number signals to obtain P transform-domain first real-number signals; performing at least clock recovery on the P transform-domain first real-number signals to obtain P transform-domain second real-number signals; performing at least polarization compensation and inverse number theoretic transform INTT processing on the P transform-domain second real-number signals to obtain m time-domain complex-number signals X and m time-domain complex-number signals Y; and performing phase recovery and decoding on the m time-domain complex-number signals X and the m time-domain complex-number signals Y to obtain bit signals.

Signal processing method and apparatus, and coherent receiver

The disclosure relates to a predistortion device for a non-linear PA device, comprising: an input terminal for receiving an input signal; a predistortion filter, connected between the input terminal and the non-linear PA device; a first delay element, coupled to the input terminal, and configured to delay the input signal by a time delay D to provide a delayed input signal; and an adaptive filter unit, comprising an adaptive filter having adjustable filter weights, and configured to filter the delayed input signal, and an adjusting unit, wherein the adjusting unit is configured to process an adaptive algorithm, based on the delayed input signal, to adjust the filter weights of the adaptive filter, and to provide both the adaptive filter and the predistortion filter with the same adjusted filter weights.

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Moscow, Russia

Dmitry Anatolievich Dolgikh