Performance Improvement of QPSK Signal Predetection EGC Diversity Receiver
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Date
2012-09
ORCID
Advisor
Referee
Mark
Journal Title
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Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
This paper proposes a modification of quadrature phase-shift-keying (QPSK) signal diversity reception with predetection equal gain combiner (EGC). The EGC combining is realized by using the constant modulus algorithm (CMA). Carrier synchronization is performed by the phase locked loop (PLL). Comparative analysis of the modified and ordinary diversity receiver in the presence of carrier frequency offset in the additive white Gaussian noise (AWGN) channel, as well as in Rician fading channel is shown. The proposed diversity receiver allows significant frequency offset compared to the diversity receiver that uses only PLL, and the error probability of the proposed receiver is very close to the error probability of the receiver with only PLL and zero frequency offset. The functionality of the proposed diversity receiver, as well as its properties is experimentally verified on a system based on universal software radio peripheral (USRP) hardware. The performed comparison confirms the expected behavior of the system.
Description
Citation
Radioengineering. 2012, vol. 21, č. 3, s. 831-837. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2012/12_03_0831_0837.pdf
http://www.radioeng.cz/fulltexts/2012/12_03_0831_0837.pdf
Document type
Peer-reviewed
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Published version
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Language of document
en