A method and system for constructing a Doppler channel model based on dual-path propagation

Abstract

The invention discloses a method and system for constructing a Doppler channel model based on double-path propagation, including: S1, constructing a small-scale fading model based on frequency selective fading and fast fading; S2, constructing a model based on the measured data of Okumura-Hata Large-scale fading model; S3, build a narrow-band Gaussian noise model; S4, combine small-scale fading model, large-scale fading model and narrow-band Gaussian noise model to build a Doppler channel model based on dual-path propagation. Based on the measured data model and theoretical calculation, the invention comprehensively considers various losses in the channel transmission process to construct a Doppler channel model based on double-path propagation, which simulates the channel transmission environment more realistically, and provides algorithm development and communication system design. accurate channel parameters.

Description

technical field [0001] The invention relates to the technical field of channel models, in particular to a method and system for constructing a Doppler channel model based on double-path propagation. Background technique [0002] With the continuous development of various types of communication services and the rapid development of the Internet of Things, people have higher and higher requirements for the accuracy of channel models in various scenarios. In order to better develop baseband algorithms and research on communication system performance, it is urgent to requires a channel model that is very close to the real environment. [0003] Some of the existing channel models mainly have the following directions. The first is the channel model based on the measured environmental data. This type of model has a large amount of data, takes a long time, and can only collect data in certain common scenarios; second It is a channel model based on pure theoretical calculation. Alth...

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Problems solved by technology

[0003] Some existing channel models mainly have the following directions. First, channel models based on environmental measured data. This type of model has a large amount of data, takes a long time, and can only collect data in certain common scenarios; second. It is a channel model based on pure theoretical calculations. Although the model is easy to implement, it is often quite different from the actual channel environment.

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