International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 9, September 2017

International Journal of Science and Technology


Direct Digital Synthesizer using Pipelined CORDIC Algorithm for Software Defined Radio

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Author T.Menakadevi, M.Madheswaran
On Pages 372-378
Volume No. 2
Issue No. 6
Issue Date June, 2012
Publishing Date June, 2012
Keywords FPGA, Direct Digital synthesis, ROMLUT, CORDIC


Abstract

This paper proposes Design and Implementation of CORDIC algorithm for Direct Digital Synthesizer. COordinate Rotation DIgital Computer (CORDIC) algorithm is an interesting technique for phase to sine amplitude conversion. The algorithm proposed in this design is to utilize dynamic transformation rather than ROM static addressing. The proposed CORDIC design is based on Pipeline data path Architecture. By using pipeline architecture, the design is able to calculate continuous input, has high throughput, and doesn’t need ROM or registers to save constant angle iteration of CORDIC. CORDIC algorithm provides fast and area efficient computations of sine and cosine functions without using ROM LUTs. This paper is focused on the Direct Digital Synthesizer using CORDIC approach, to increase the speed with minimum area requirement in FPGA. To prove the better performance of proposed DDS architecture it is compared favorably with several existing DDS architectures

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