Oscar Gustafsson, Linköping University
“Low power and low complexity fixed and flexible DSP”
For DSP functions having fixed functionality it is possible to simplify the corresponding implementation significantly to reduce the power consumption and computational complexity. In this talk we will present different ways to obtain this. Primarily, we will discuss how to replace costly general multipliers with simpler networks consisting of adders, subtracters, and shifts and show how these methods can be generalised to multiple-input non-recursive time-invariant linear transfer functions. Furthermore, we will present algorithms with a certain degree of flexibility that are composed of both fixed function blocks and simple reconfiguration blocks to reduce the total implementation cost.