外文翻译---基于FPGA系统的数字信号处理适用性评估.doc

一、英文原文 An Assessment of the Suitability of FPGA-Based Systems for use in Digital Signal Processing★ ★★ Russell J. Petersen and Brad L. Hutchings Brigham Young University, Dept. of Electrical and Computer Engineering, 459 CB, Provo UT 84602, USA Abstract. FPGAs have been proposed as high-performance alternatives to DSP processors. This paper quantitatively compares FPGA performance against DSP processors and ASICs using actual applications and existing CAD tools and devices. Performance measures were based on actual multiplier performance with FPGAs, DSP processors and ASICs. This study demonstrates that FPGAs can provide an order of magnitude better performance than DSP processors and can in many cases approach or exceed ASIC levels of performance. 1 Introduction To meet the intensive computation and I/O demands imposed by DSP systems many custom digital hardware systems utilizing ASICs have been designed and built. Custom hardware solutions have been necessary due to the low performance of other approaches such as microprocessor-based systems, but have the disadvantage of inflexibility and a high cost of development. The DSP processor attempts to overcome the inflexibility and development costs of custom hardware. The DSP processor provides flexibility through software instruction decoding and execution while providing high performance arithmetic components such as fast array multipliers and multiple memory banks to increase data throughput. The FPGA has also recently generated interest for use in implementing digital signal processing systems due to its ability to implement custom hardware solutions while still maintaining flexibility through device reprogramming [2]. Using the FPGA it is hoped that a significant performance improvement can be obtained over the DSP processor without sacrificing system flexibility. This paper is an attempt to quantify the ability of the FPGA to provide an acceptable performance improvement over the DSP processor in the area of digi