Quadrature Phase Shift Keying modulator & demodulator for Wireless Modem

Author

Memon, Tayab D. ; Ghangro, Walliullah ; Chowdhry, B.S. ; Shaikh, Ayaz A.

Author_Institution

RMIT, Melbourne, VIC

fYear

2009

fDate

17-18 Feb. 2009

Firstpage

1

Lastpage

6

Abstract

Digital modulation is a process that impresses a digital symbol on to a signal suitable for transmission on a wired or wireless medium in order to receive that signal at receiving end correctly with out any loss of information. Quadratic phase shift keying (QPSK) modulation technique is the most widely used modulation scheme in modern digital communication system; it provides high performance on bandwidth efficiency and bit error rate. In this paper the complete model of quadrature phase shift keying (QPSK) modulator and demodulator has been developed. The model has been simulated in Matlab using Simulink. Complete results are tested and verified. In final hardware design and implementation of QPSK for Wireless Modem has been proposed. QPSK modulation has various applications particularly in the design of wireless modem, cellular CDMA communication.

Keywords

bandwidth allocation; cellular radio; code division multiple access; error statistics; modems; quadrature phase shift keying; bandwidth efficiency; bit error rate; cellular CDMA communication; digital communication system; digital modulation; quadrature phase shift keying demodulator; wireless modem design; Demodulation; Digital communication; Digital modulation; Mathematical model; Modems; Phase modulation; Phase shift keying; Propagation losses; Quadrature phase shift keying; Signal processing; MATLAB Simulation of QPSK; QPSK; QPSK Hardware Implementation; Wireless Modem;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer, Control and Communication, 2009. IC4 2009. 2nd International Conference on

Conference_Location

Karachi

Print_ISBN

978-1-4244-3313-1

Electronic_ISBN

978-1-4244-3314-8

Type

conf

DOI

10.1109/IC4.2009.4909180

Filename

4909180