Hardware/Software Co-design Applied to Reed-Solomon Decoding for the DMB Standard

This paper addresses the implementation of Reed- Solomon decoding for battery-powered wireless devices. The scope of this paper is constrained by the Digital Media Broadcasting (DMB). The most critical element of the Reed-Solomon algorithm is implemented on two different reconfigurable hardware architectures: an FPGA and a coarse-grained architecture: the Montium, The remaining parts are executed on an ARM processor. The results of this research show that a co-design of the ARM together with an FPGA or a Montium leads to a substantial decrease in energy consumption. The energy consumption of syndrome calculation of the Reed- Solomon decoding algorithm is estimated for an FPGA and a Montium by means of simulations. The Montium proves to be more efficient

Instruction set extensions for software defined radio on a multithreaded processor

Software dened radios, which provide a programmable solu-tion for implementing the physical layer processing of multi-ple communication standards, are widely recognized as one of the most important new technologies for wireless com-munication systems. Emerging communication standards, however, require tremendous processing capabilities to per-form high-bandwidth physical-layer processing in real time. In this paper, we present instruction set extensions for sev-eral important communication algorithms including convo-lutional encoding, Viterbi decoding, turbo decoding, and Reed-Solomon encoding and decoding. The performance bene ts of these extensions are evaluated using a supercom-puter class vectorizing compiler and the Sandblaster low-power multithreaded processor for software dened radio. The proposed instruction set extensions provide signicant performance improvements, while maintaining a high degree of programmability. Categories and Subject Descriptors C.3 [Computer Systems Organization]: Special-purpose and Application-based Systems|Real-time and embedded sys

Low-power instruction-caches design for embedded microprocessors

Ph.DDOCTOR OF PHILOSOPH