A subband coding, BCH coding, and 16-QAM system for mobile radio speech communications

AVPC-subband coding system for speech encoding

Pan-European speech coding standard for digital mobile radio

A new Pan-European digital cellular mobile radio system has bccn under planning since 19~,2 within CEPT GSM {Groupc Specialc Mol',ilc). The pai',er presents the progress of the studies that wcrc initiated by the joint Speech coding Experts Group created by CEPT TR3 and COST 2117 to define :m algorithm to encode the speech at around Ill kbit/s for this purpose. in a coordinated evaluation progra...

Speech and Audio Coding for Multimedia Communications

We have seen rapid progress in high-quality compression of telephone speech and wideband speech signals. Linear prediction, subband coding, transform coding, as well as various forms of vector quantiza-tion and entropy coding techniques have been used to design efficient coding algorithms which can achieve substantially more compression than was thought possible only a few years ago. In the cas...

Three-dimensional subband coding techniques for wireless video communications

This paper presents a new 3-D subband coding framework that is able to achieve a good balance between high compression performance and channel error resilience. Various data transform methods for the decorrelation of video were examined and compared, including subband filtering, discrete cosine transforms, discrete wavelet transforms, and lapped transforms. The coding stage of the algorithm is ...

Quality Reservation in Video Communications: Subband Coding and Resource Management

Multimedia data transmission is becoming a popular application in computer communications. Compared with digital media such as audio or text, real-time video is the most difficult medium for a communication system to handle. The difficulties lie, in part, in the strict end-to-end delay requirements of this medium. It is desirable to maintain a specified quality during a video session. To guaran...