Tolba MF, AbdelAty AM, Said LA, Elwakil AS, Azar AT, Madian AH, Radwan AG, Ouannas A (2017). FPGA Realization of Caputo and Grünwald-Letnikov Operators. The 6th International Conference on Modern Circuits and Systems Technologies (MOCAST), 4-6 May 2017 Thessaloniki Greece
|Journal:||The 6th International Conference on Modern Circuits and Systems Technologies (MOCAST), 4-6 May 2017 Thessaloniki Greece|
|Full paper||Not Available|
|Supplementary materials||Not Available|
This paper proposes a hardware platform implementation on FPGA for two fractional-order derivative operators. The Grünwald-Letnikov and Caputo definitions are realized for different fractional orders. The realization is based on non-uniform segmentation algorithm with a variable lookup table. A generic implementation for Grünwald-Letnikov is proposed and a 32 bit Fixed Point Booth multiplier radix-4 is used for Caputo implementation. Carry look-ahead adder, multi-operand adder and booth multiplier are used to improve the performance and other techniques for area and delay minimization have been employed. A comparison between the two presented architectures is introduced. The proposed designs have been simulated using Xilinx ISE and realized on FPGA Xilinx virtex-5 XC5VLX50T. The total area of 2515 look up tables is achieved for Caputo implementation, and maximum frequency of 54.11 MHz and 1498 slices are achieved for Grünwald-Letnikov architecture.