A R DIGITECH International Journal Of Engineering, Education And Technology (ARDIJEET) www.ardigitech.in ISSN 2320-883X,VOLUME 3 ISSUE 2 ,01/04/2015 1 SURVEY PAPER ON PARTIALLY RECONFIGURABLE PSK MODULATORS ON FPGA Ms.Simanti Chaudhari*1 , Prof. G.R.Rahate*2 *1(Student of ME(VLSI & EMBEDDED SYSTEM) PCCOE,Pune) *2(Lecturer of E&TC Dept., PCCOE,Pune) sgchaudhri01@gmail.com *1 ,ganesh.rahate@pccoepune.org *2 ABSTRACT - As we know, modulator is one of the important block in SDR implementation. The PSK modulation schemes are widely used in wireless communication system as it transmits information data by ch anging the phase of the carrier signal. By partially reconfiguring FPGA, we can swap between various modulation schemes on fly. T his paper presents the PSK modulators (BPSK and QPSK) implementation on FPG A.Both modulators are designed in MATLAB simulink using system generator blocksets. The generated VHDL code is then implemented on Virtex 5 FPGA development board. The generated waveforms are observed using Xilinx ChipScope Pro An alyzer Tool. This paper also gives the partial reconfiguration flow to apply it to modulators design to swap between various PSK schemes. Keywords- BPSK, QPSK, FPGA etc 1. INTRODUCTION A Software Defined Radio (SDR), is a system in which many typical communication blocks that have been implemented on hardware, are instead implemented in software. These blocks includes mixer, filters amplifiers, modulators, demodulators etc [1]. Modulation is the process of varying one or more properties of carrier signal with a modulating signal that contains the information to be transmitted[3].Modulation process converts a baseband signal into a bandpass signal compatible with available transmission facilities. At the receiver end, demodulation must be accomplished to recognize the signals [3]. Partial Reconfiguration is the process of changing a portion of reconfigurable hardware circuitry while the other part is still running. It has two regions, static and dynamic. Partial reconfiguration is accomplished by making changes in a dynamic region. By reconfiguring a FPGA, its hardware resources can be reused and shared to provide multiple functionalities on a single device. This paper describes the BPSK (Binary Phase Shift Keying) and QPSK (Qurdrature Phase Shift Keying) modulators design in MATLAB simulink environment. Then, these modulators are designed using Xilinx System Generator block sets and then implemented individually on Virtex-5 FPGA development board to analyze the generated waveforms. Also, Partial reconfiguration tool flow help us to swap between various modulations schemes on fly to reduce area utilization. 2. PSK MODULATORS The modulators which transmit the information signal by changing the phase of carrier signal are known as PSK modulators. The PSK modulators includes BPSK, QPSK, 8- PSK etc.In this paper, BPSK and QPSK modulators are considered. 2.1 BPSK In BPSK, two phases are used. The carrier signal changes its phase by 180ᵒ when modulating signal changes its bit from 0 to 1 and vice-versa. Fig. 1 shows the BPSK modulator. Published in A R DIGITECH