Near Optimal Common Detection Techniques for Shaped Offset QPSK and Feher's QPSK
نویسندگان
چکیده
منابع مشابه
Space-Time Shaped Offset QPSK
This paper describes the use of orthogonal space-time block codes to overcome the performance and complexity difficulties associated with the use of Shaped Offset QPSK (SOQPSK) modulation, a ternary continuous phase modulation (CPM), in multiple-input multiple-output telemetry systems. The orthogonal space-time block code is applied to SOQPSK waveforms in the same way it would be applied to sym...
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The Ungerboeck and Forney observation models for offset QPSK are derived for three different representations for OQPSK. The representations and their corresponding Ungerboeck observation models are different, but the trellises used by the maximum likelihood sequence estimators possess the same complexity. The Forney observation models are obtained in straight-forward way for the bit-based repre...
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Modulation techniques have concerned increasing attention in optical wireless communications. Downlink transmission (base station to mobile terminal) using high data rate Mary Quadrature Amplitude Modulation (QAM), Quadrature Phase Shift Keying (QPSK) and Binary Phase Shift Keying (BPSK) modulation schemes are considered in a Wideband-Code Division Multiple Access (W-CDMA) system. QPSK or Quadr...
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ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 2008
ISSN: 0090-6778,1558-0857
DOI: 10.1109/tcomm.2008.060155