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In this paper, a new DSP architecture for baseband processing in multistandard software-defined radios, is presented. Very high data throughput is achieved by means of massively parallel arithmetic units. The single-instruction multiple-data (SIMD) architecture provides best support for vector-oriented algorithms commonly used in many signal processing applications. Based on a radix-4 butterfly structure and optimized for complex-valued arithmetic, the processor's datapath enables extremely fast FFT computations. Furthermore, exceptional programming flexibility and increased code efficiency are offered by a reconfigurable instruction set. Initial performance assessments have shown remarkable speedup factors for various DSP algorithms in comparison with conventional DSP architectures.
Circuits and Systems, 2003 IEEE 46th Midwest Symposium on (Volume:3 )
Date of Conference: 27-30 Dec. 2003