A Novel Sample Based Quadrature Phase Shift Keying Demodulator
Joint Authors
Mohamed Moubark, Asraf
Ali, Sawal Hamid Md
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-14
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
This paper presents a new practical QPSK receiver that uses digitized samples of incoming QPSK analog signal to determine the phase of the QPSK symbol.
The proposed technique is more robust to phase noise and consumes up to 89.6% less power for signal detection in demodulation operation.
On the contrary, the conventional QPSK demodulation process where it uses coherent detection technique requires the exact incoming signal frequency; thus, any variation in the frequency of the local oscillator or incoming signal will cause phase noise.
A software simulation of the proposed design was successfully carried out using MATLAB Simulink software platform.
In the conventional system, at least 10 dB signal to noise ratio (SNR) is required to achieve the bit error rate (BER) of 10−6, whereas, in the proposed technique, the same BER value can be achieved with only 5 dB SNR.
Since some of the power consuming elements such as voltage control oscillator (VCO), mixer, and low pass filter (LPF) are no longer needed, the proposed QPSK demodulator will consume almost 68.8% to 99.6% less operational power compared to conventional QPSK demodulator.
American Psychological Association (APA)
Mohamed Moubark, Asraf& Ali, Sawal Hamid Md. 2014. A Novel Sample Based Quadrature Phase Shift Keying Demodulator. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1048335
Modern Language Association (MLA)
Mohamed Moubark, Asraf& Ali, Sawal Hamid Md. A Novel Sample Based Quadrature Phase Shift Keying Demodulator. The Scientific World Journal No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1048335
American Medical Association (AMA)
Mohamed Moubark, Asraf& Ali, Sawal Hamid Md. A Novel Sample Based Quadrature Phase Shift Keying Demodulator. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1048335
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048335