A novel QPSK Modulator

Author

Birla, Nakul ; Gautam, Nishit ; Patel, Jatin ; Balaji, Pavan

Author_Institution

SENSE, VIT Univ., Vellore, India

fYear

2014

fDate

8-10 May 2014

Firstpage

653

Lastpage

656

Abstract

QPSK is a modulation scheme used to represent digital data. Any modulation scheme uses finite number of different signals to represent digital data. QPSK uses four different phases to represent data. QPSK (Quadrature Phase Shift Keying) scheme is used in various applications in modern digital communication system; it provides high performance on bandwidth efficiency and bit error rate. The areas include wireless communication, mobile communication and Satellite Communication. Various QPSK Modulators are available already like the ones that are made from counters and MUX, using Balanced Modulators. But these are bulky owing to the use of Transformers for making Balanced Modulators. Our paper shows a novel QPSK Modulator made from OP-AMPS. Use of Op- Amps simplifies the circuit and we can get perfect results. The circuit complexity in terms of size is reduced to a large extent.

Keywords

error statistics; operational amplifiers; quadrature phase shift keying; MUX; Op-Amps; QPSK modulator; balanced modulators; bit error rate; digital communication system; digital data; mobile communication; quadrature phase shift keying; satellite communication; transformers; wireless communication; Band-pass filters; Binary phase shift keying; Amplitude Shift Keying(ASK); Binary Phase Shift Keying(BPSK); Op-Amps; Quadrature Phase Shift Keying(QPSK);

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Communication Control and Computing Technologies (ICACCCT), 2014 International Conference on

Conference_Location

Ramanathapuram

Print_ISBN

978-1-4799-3913-8

Type

conf

DOI

10.1109/ICACCCT.2014.7019170

Filename

7019170