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Implementation of QPSK Transmitter using Direct Conversion Method

Author(s):

N Roopa , BMS COLLEGE OF ENGINEERING

Keywords:

QPSK Modulator, VHDL, FPGA

Abstract

This paper demonstrates the design of QPSK modulator using the direct conversion architecture. Direct-conversion is different wireless receiver architecture to the well-established Super heterodyne, mainly for highly integrated, low-power terminals. The DCR gives zero intermediate frequency. The DCR data interface uses parallel data ports to transfer the data between device and FPGA processor. Bus transfers are controlled using simple hardware handshake signaling called SPI protocol. The configuration is specified using VHDL language. The QPSK modulator is designed and simulated in MATLAB 2013a and implemented using Xilinx 14.7 system generator, plan head. The output waveforms are displayed and analyzed.

Other Details

Paper ID: IJSRDV4I60316
Published in: Volume : 4, Issue : 6
Publication Date: 01/09/2016
Page(s): 1048-1050

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