Channel coding based on the UID channel in the PHS

Abstract

The invention provides a means of channel coding using UDI channel of PHS, it includes: coding the sound; adding the cyclic redundancy check code that is CRC code to the sound data which is after the coding; the sound coding data is convoluotinal encoding or repeat encoding [M1]; the sound data which is after the convoluotinal encoding or repeat encoding is bit slotting or filling. The invention is simple, and it increases the fading property of PHS, and increases the sound quality. Because the invention makes UDI channel possesses bearing of coding protection, so the AMR, command, VoIP can be transferred.

Description

technical field The present invention relates to telephone communication technology, in particular to related technologies of channel coding and CRC error correction mechanism on UDI (Unrestricted Digital Information, unrestricted digital information) channel in PHS (Personal Handset System, personal handheld telephone system). Background technique The physical layer of the PHS in the prior art is relatively simple. Since there is no channel coding in the PHS in the prior art, the PHS in the prior art does not support general radio interface enhancement technology. As a result, the PHS has poor anti-fading performance and poor voice quality, and it only supports data communication, but the support effect for VoIP (Voice over Internet Protocol) is not ideal. To enhance PHS performance, the existing PHS must be extended and enhanced. However, the service expansion capability of the existing PHS is limited. In order to facilitate the expansion of new services and the applic...

AI Technical Summary

Problems solved by technology

The present invention can not only overcome the disadvantages of PHS in the prior art, such as poor ability to expand new services and low reliability of communication transmission, but also the present invention is simple to implement, can enhance the anti-fading performance of PHS, and improve voice quality

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