• Hemashree C M
• H Venkatesh Kumar

Digital modems like M-PSK (M-array phase shift keying)designs are used as a piece of some quick applications like satellite correspondence, as they are power efficient and have more information exchange limit contrast with the other schemes. This examination exhibits extensive scale composed circuit proposals for modulators and demodulators of QPSK (Quadrature phase shift keying), 8PSK and 16PSK structures. The propound modulators make an endeavor not to make use of any multiplier unlike ones in consistent modulators and designed based on the DDS (Direct Digital Synthesis) principle. In light of astute acknowledgment method, this examination put forward new demodulation computations for 8PSK and 16PSK structures. This study moreover demonstrates VLSI(Very Large Scale Integration)models for each of the stated algorithms. The designs are effectively developed at system level and lastly, the models are depicted in Verilog and examined on Xilinx platform.

QPSK, DDS, modulation, demodulation

"Performance Analysis and Simulation of Digital Modems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.46-55, May-2019, Available :http://www.jetir.org/papers/JETIR1905G08.pdf

"Performance Analysis and Simulation of Digital Modems", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp46-55, May-2019, Available at : http://www.jetir.org/papers/JETIR1905G08.pdf