5G broadcast communication method and system based on time domain interleaving

Abstract

The invention provides a 5G broadcast communication method and system based on time domain interleaving. The method comprises the steps: carrying out the bit coding and modulation of a bit sequence needing to be transmitted, obtaining a symbol-level data stream, carrying out the time domain interleaving, and obtaining a data matrix, the data matrix is sequentially subjected to a pilot frequency insertion step, an inverse fast Fourier transform step and a cyclic prefix insertion step to obtain frame data, and each frame of data is transmitted to a receiving step through a channel; each frame of data transmitted through a channel is sequentially subjected to a cyclic prefix removal step, a Fourier transform step and a channel estimation and equalization step to obtain a symbol-level data stream, and is subjected to a time domain de-interleaving step to obtain symbol data in a sequence before the interleaving step; and then bit data received by a receiving end is obtained through a demodulation step and a bit decoding step in sequence, and 5G broadcast communication is completed. According to the invention, large multipath time delay extension is resisted, the application scene of multimedia broadcast multicast is supported, and the fault tolerance performance of the system is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular, to a 5G broadcast communication method and system based on time domain interleaving. More specifically, it relates to a communication method with a time-domain interleaving function suitable for 5G broadcasting system rooftop and car-mounted receiving modes. Background technique [0002] With the coming of the 5G era, high-speed mobile communication networks can carry and disseminate richer multimedia resources, which will definitely have a huge impact on the broadcast and television industry. The emergence of 5G will bring challenges to traditional digital terrestrial broadcasting technologies, and at the same time bring new opportunities for mobile reception of broadcasting and TV. 5G will support services such as mobile video, ultra-high-definition, augmented reality, and virtual reality. However, facing the rapid growth of multimedia services for large-s...

AI Technical Summary

Problems solved by technology

5G will support services such as mobile video, ultra-high-definition, augmented reality, and virtual reality. However, facing the rapid growth of multimedia services for large-scale users, explosive traffic consumption will greatly affect the service quality of users accessing mobile communication networks.

This kind of signal fading caused by bad channels often causes continuous burst errors in the data in the receiver. The existing demodulation and error correction technologies are relatively easy to fight against scattered random errors, but it is difficult to correct a continuous burst of errors. sudden error

Images