Low-Energy Multi-User VSELP Vocoder for a Domain Specific Reconfigurable DSP Architecture

5/26/98


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Table of Contents

Low-Energy Multi-User VSELP Vocoder for a Domain Specific Reconfigurable DSP Architecture

Typical Digital Cellular phone

Typical Digital Base Station

How to Save Energy?

CODEC Data Stream Observations

Which CODEC? answer: VSELP

What is the Repetitious Part?

VSELP Repetitious Part (con’t)

HW Implementation Strategy

HW for dot_product and iiRfilter

Architecture Instance

HW Simplifying Assumptions

Processing 1 Stream

Processing 4 Streams

Thread Scheduling

Priority and Throughput Adaptation

Satellite Access Simulation Trace

Results

Conclusions

Future Work

Author: Roy A. Sutton

Home Page: http://www.cs.berkeley.edu/~adj/cs294-1.s98/