DSP Software Development Techniques for Embedded and Real-Time Systems

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Power Optimization Techniques Using DSP

Introduction

Despite the importance of power consumption and memory use, relatively little emphasis has been placed on optimizing power and memory for DSP applications. This chapter will provide some guidelines on optimizing DSP applications for power.

The requirements for low power design come from several areas including mobility concerns for portable applications using batteries, ergonomics related areas that drive packaging and other thermal cooling constraints, and finally to overall system value that comes from requirements that support channel density and other electricity cost factors (Figure 7.1).

Figure 7.1 Low power demands of innovative end user equipment (courtesy of Texas Instruments) ...