Implementation and analysis of QPSK & 16QAM modulator & demodulator

Author

Zafar, Adnan ; Farooq, S. Zaineb

Author_Institution

Dept of Commun. Syst. Eng., Inst. of Space Technol., Islamabad

fYear

2008

fDate

29-30 Nov. 2008

Firstpage

64

Lastpage

68

Abstract

In this paper we present a system design that incorporates the functionalities of a digital modulator/demodulator along with controlling features such as symbol generation, filtering, modulation, demodulation, phase and timing recovery for QPSK and 16 QAM modulation schemes. It is concluded that for a BER of 10^-5 an E_b/N_o of 13.5 dB and 9.5 dB is required for 16 QAM and QPSK respectively. Simulation and analysis of QPSK and 16 QAM modulator and demodulator is done on MATLABreg with real time implementation on TMS320C6713 digital signal processing (DSP) Kit.

Keywords

modems; quadrature amplitude modulation; quadrature phase shift keying; 16QAM modulation; 16QAM modulator; QPSK; demodulation; digital modulator/demodulator; digital signal processing; phase recovery; quadrature amplitude modulation; quadrature phase shift keying; timing recovery; Control systems; Demodulation; Digital filters; Digital modulation; Digital signal processing; Filtering; Phase modulation; Quadrature amplitude modulation; Quadrature phase shift keying; System analysis and design;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Space Technologies, 2008. ICAST 2008. 2nd International Conference on

Conference_Location

Islamabad

Print_ISBN

978-1-4244-3299-8

Electronic_ISBN

978-1-4244-3300-1

Type

conf

DOI

10.1109/ICAST.2008.4747688

Filename

4747688