Trellis coding of quadrature frequency/phase modulated signals

The authors explore the trellis coding of continuous-phase quadrature frequency/phase modulated (CPQFPM) signal sets and continuous-phase FPM (CPFPM) signal sets, which are embodiments of the quadrature biorthogonal modulation (QBOM) technique. Conventional TCM and multiple TCM schemes with these mo...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 1992-10, Vol.10 (8), p.1254-1263
Main Authors: Periyalwar, S.S., Fleisher, S.
Format: Article
Language:English
Subjects:
AWGN channels
Convolution
Convolutional codes
Frequency
Modulation coding
Multidimensional systems
Performance gain
Phase modulation
Quadrature amplitude modulation
Rician channels
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Summary:The authors explore the trellis coding of continuous-phase quadrature frequency/phase modulated (CPQFPM) signal sets and continuous-phase FPM (CPFPM) signal sets, which are embodiments of the quadrature biorthogonal modulation (QBOM) technique. Conventional TCM and multiple TCM schemes with these modulation formats are examined using both the AWGN channel and the Rician fading channel design. Asymptotic coding gains in d/sup 2/(free) are tabulated for trellis-coded rate 3/4, 5/6, and 6/7 QFPM schemes, in comparison with uncoded modulations (8AMPM, 32AMPM) and other trellis-coded modulations (TCM (2FSK/4PSK 16QAM, 64QAM), MTCM (2FSK/8PSK)) of equivalent throughput rate. Performance gains on the Rician fading channel are demonstrated by increased values of the design parameters for this channel, namely symbol diversity L/sub min/ and branch distance product P.< >
ISSN:0733-8716
1558-0008
DOI:10.1109/49.166752