On the design of frequency-domain equalizers for OQPSK modulations

Authors:
Rui Dinis;Miguel Luzio;Paulo Montezuma
Affiliations:
Instituto de Telecomunicações, Lisboa, Portugal and Departamento de Engenharia Electrotécnica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portug ...;UNINOVA, Caparica, Portugal;Departamento de Engenharia Electrotécnica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal and UNINOVA, Caparica, Portugal
Venue:
Sarnoff'10 Proceedings of the 33rd IEEE conference on Sarnoff
Year:
2010

Citing 1
Cited 1

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Abstract

This paper considers frequency-domain receiver design for OQPSK signals (Offset Quaternary Phase Shift Keying). It is shown that conventional QPSK receivers are not suitable to OQPSK schemes since they lead to significant interference between in-phase (I) and quadrature (Q) components. To overcome this problem we propose several linear receivers where there is no I-Q interference. Our receivers are suitable to OQPSK schemes, significantly outperforming frequency-domain receivers designed for QPSK modulations.