Power consumption analysis and energy efficient optimization for turbo decoder implementation

In today´s digital baseband implementation, energy efficiency, flexibility, high performance and low power are major requirements for channel decoding. This paper presents low power techniques for turbo decoder implementations. An ASIP for turbo decoding is considered as a case study. Based on the results of power consumption analysis of the case study architecture, low power techniques for the ASIP are proposed and applied. The optimization techniques show an interesting gain in normalized energy efficiency between 4% and 54% compared to the state of the art.