System Implementation of a-16-Kbps Waveform Coder Using Adaptive Vector Quantization

The research of this paper presents the development of an Adaptive Vector Quantizer (AVQ) CODEC chip using Open Architecture Silicon Implementation System (OASIS) tools. The goal of this effort is development of a 16-Kbps AVQ coder prototype system which can be used as an alternative to the currently used 32-Kbps Adaptive Delta Pulse Code Modulation (ADPCM). The AVQ semi-custom chip layout uses 1.2 micron SCMOS technology and consists of over 157,000 transistors. The AVQ system is being designed with Mentor Graphics tools and is a 4-layer PC board encompassing over 50 analog and digital components.