నైరూప్య

CORDIC Based Digital Modulator Systems

S.Ratheesh, S.F.Safna, V.Vandana pillai, Sajin.C.S

In this paper, we propose two types of modern digital modulators with a hardware efficient low power Coordinate Rotation Digital Computer algorithm(CORDIC). Proposed algorithm has two modes of operation and in the first mode, it generate sine and cosine carriers simultaneously with same frequency and in the second mode it is used for fast rectangular to polar coordinate conversion. We implement this algorithm in the IQ modulator and in Polar modulator system and achieved more hardware and power efficient multimode and multiband transmitters for modern wireless communication systems. Simulation of the proposed approach is done with Model Sim-Altera 6.6d and implemented on Xilinx Virtex 7.