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A continuous phase modulation and demodulation method based on ellipsoidal wave signal

An ellipsoidal wave and phase modulation technology, which is applied in the modulation carrier system, phase modulation carrier system, digital transmission system, etc., can solve the problems of limited spectrum resources and achieve excellent spectrum performance, fast high-frequency roll-off, and out-of-band attenuation fast effect

Active Publication Date: 2022-04-29
NAVAL AVIATION UNIV
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Problems solved by technology

[0002] The spectrum resources that can be effectively used in the existing communication system are very limited, and the frequency band utilization and power efficiency of the modulated signal are important factors that affect the overall performance of the communication system.

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  • A continuous phase modulation and demodulation method based on ellipsoidal wave signal
  • A continuous phase modulation and demodulation method based on ellipsoidal wave signal
  • A continuous phase modulation and demodulation method based on ellipsoidal wave signal

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0045] In order to better illustrate the implementation steps of the present invention and at the same time demonstrate the excellent characteristics of the present invention, the steps of using the expressions proposed in the present invention will be further described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] For example, in the remote sensing test of deep space exploration, CPM signals with constant envelope, insensitivity to nonlinear characteristics, and high spectral efficiency are usually required ...

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Abstract

The present invention proposes a continuous phase modulation and demodulation method based on an ellipsoidal wave signal, which uses an ellipsoidal wave signal with high energy aggregation in the time-frequency domain and flexible and controllable time-bandwidth product in the signal space as a continuous phase modulation signal The baseband FM pulse signal is used to generate a modulated signal, and the output data is demodulated by using the coherent detection method of the ellipsoidal wave signal waveform. Compared with the existing continuous phase modulation signals based on signals such as rectangular pulses and raised cosine pulses, the present invention can obtain modulation signals with higher energy aggregation and frequency band utilization under the same parameter conditions, and can be superior to existing continuous phase modulation signals. Demodulation performance of differential coherent detection of phase modulated signals.

Description

technical field [0001] The invention relates to the field of digital signal transmission and processing, in particular to a continuous phase modulation and demodulation method based on ellipsoidal wave signals, which can be used for modulation and demodulation of continuous phase modulation signals in wireless digital communication systems. Background technique [0002] The spectrum resources that can be effectively used in the existing communication system are very limited, and the frequency band utilization and power efficiency of the modulated signal are important factors that affect the overall performance of the communication system. T.Aulin et al. of Lund University in Sweden published a series of papers in 1981, systematically expounding the continuous phase modulation (Continuous Phase Modulation, CPM) technology. This type of modulation signal has a constant envelope, high frequency band utilization and power efficiency. , less affected by nonlinear devices, etc., i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/20H04L27/227
CPCH04L27/2003H04L27/2014H04L27/227
Inventor 杨大伟王红星刘传辉康家方张磊刘锡国
Owner NAVAL AVIATION UNIV
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