Near Optimal Common Detection Techniques for Shaped Offset QPSK and Feher´s QPSK

Author

Nelson, Tom ; Perrins, Erik ; Rice, Michael

Author_Institution

Member, IEEE, Dept. of Electr. & Comput. Eng., Brigham Young Univ., Provo, UT

Volume

56

Issue

5

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

724

Lastpage

735

Abstract

A detector architecture capable of detecting both shaped offset quadrature phase shift keying (SOQPSK-TG) and Feher´s quadrature phase shift keying (FQPSK-JR) is developed and analyzed. Both modulations are embodied as fully interoperable modulations in the Interrange Instrumentation Group (IRIG) standard IRIG-106. It is shown that the common detector achieves near optimal bit error rate performance without knowledge of which modulation is used by the transmitter. The detection techniques are based on a common trellis-coded modulation representation and a common continuous phase modulation (CPM) representation for these two modulations. In addition the common pulse amplitude modulation (PAM) decomposition of the common CPM representation is developed. The common PAM-based detector offers the best performance- complexity trade-off among the detectors considered.

Keywords

continuous phase modulation; quadrature phase shift keying; transmitters; Feher quadrature phase shift keying; Interrange Instrumentation Group; continuous phase modulation; interoperable modulations; optimal common detection; pulse amplitude modulation; shaped offset quadrature phase shift keying; transmitter; Continuous phase modulation; Detectors; Digital modulation; Frequency modulation; Modulation coding; Phase detection; Pulse modulation; Quadrature phase shift keying; Telemetry; Testing; Offset QPSK, continuous phase modulation, cross-correlated trellis-coded quadrature modulation, detection;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2008.060155

Filename

4524855