Bit energy chain encoding and channel parameter-based adaptive communication method

Abstract

The invention discloses a bit energy chain encoding and channel parameter-based adaptive communication method, which belongs to the field of digital signal communication and is used for realizing reliable communication in a channel with severe noise interference and randomly changed parameters. The bit energy chain encoding and channel parameter-based adaptive communication method comprises the following steps: performing bit energy-based source encoding on a digital baseband signal and forming a multi-stage energy band signal structure; performing chain encoding on the baseband signal to form a chip sequence of a synchronous time base chain plus a structural data chain and modulating the chip sequence to a carrier for transmission; receiving and demodulating a carrier signal and performing bit energy band filtration and bit energy extraction to form a positive path of bit energy output and a negative path of bit energy output; taking the negative bit energy output as a bit synchronization reference, obtaining a frame structural sequence according to a chain energy band template, recovering the digital baseband signal and obtaining a channel interference coefficient according to a chain energy band value; and guiding the adaptive regulation of the chain energy band templates of a transmitter and a receiver by performing duplex transmission on the channel interference coefficient, and automatically regulating the rate so as to be adapted to the parameter change of the channel.

Description

technical field [0001] The invention belongs to the field of digital signal communication, and in particular relates to a source-channel joint encoding and decoding method and equipment in the digital signal transmission process, which are used to realize reliable communication in channels with serious noise interference and random parameter changes. Background technique [0002] In communication systems, channels with noise interference and random changes in transmission characteristics are called random channels. At present, how to carry out reliable communication in the parametric channel is the main research object in mobile communication, aerospace communication, ocean underwater acoustic communication, and power line carrier communication developed in recent years. The mathematical model of signal transmission through the parametric channel is as follows: figure 1 As shown, the signal S i (t) The output through the random channel is: [0003] S 0 (t)=C(t)*S i (t)+...

AI Technical Summary

Problems solved by technology

[0022] In order to solve the problem that the existing coding theories and methods are difficult to realize reliable communication in the parameter-dependent channel with severe noise interference or random parameter changes, the present invention provides an adaptive communication method based on bit energy chain coding and channel parameters, it includes:

Images