tailieunhanh - Báo cáo hóa học: " Research Article Design and Implementation of Numerical Linear Algebra Algorithms on Fixed Point DSPs"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Design and Implementation of Numerical Linear Algebra Algorithms on Fixed Point DSPs | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 87046 22 pages doi 2007 87046 Research Article Design and Implementation of Numerical Linear Algebra Algorithms on Fixed Point DSPs Zoran Nikolic 1 Ha Thai Nguyen 2 and Gene Frantz3 1 DSP Emerging End Equipment Texas Instruments Inc. 12203 SW Freeway MS722 Stafford TX 77477 USA 2 Coordinated Science Laboratory Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign 1308 West Main Street Urbana IL 61801 USA 3 Application Specific Products Texas Instruments Inc. 12203 SW Freeway MS701 Stafford TX 77477 USA Received 29 September 2006 Revised 19 January 2007 Accepted 11 April 2007 Recommended by Nicola Mastronardi Numerical linear algebra algorithms use the inherent elegance of matrix formulations and are usually implemented using C C floating point representation. The system implementation is faced with practical constraints because these algorithms usually need to run in real time on fixed point digital signal processors DSPs to reduce total hardware costs. Converting the simulation model to fixed point arithmetic and then porting it to a target DSP device is a difficult and time-consuming process. In this paper we analyze the conversion process. We transformed selected linear algebra algorithms from floating point to fixed point arithmetic and compared real-time requirements and performance between the fixed point DSP and floating point DSP algorithm implementations. We also introduce an advanced code optimization and an implementation by DSP-specific fixed point C code generation. By using the techniques described in the paper speed can be increased by a factor of up to 10 compared to floating point emulation on fixed point hardware. Copyright 2007 Zoran Nikolic et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in

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