Compared performances of trellis coded QDPSK modulation and CPFSK modulation with discrimination detection

The performance of a trellis coded four phase differential phase shift keying (TC QDPSK) modem with symbol decoding is compared with a continuous phase frequency shift keying (CPFSK) modem using noncoherent detection. The bit error rate (BER) performance as a function of signal-to-noise ratio per bi...

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Bibliographic Details
Published inProceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991 pp. 467 - 472 vol.1
Main Authors Prescott, G.E., Bargallo, J.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1991
Subjects
Bandwidth
Bit error rate
Decoding
Differential phase shift keying
Frequency shift keying
Modems
Modulation coding
Phase detection
Phase frequency detector
Signal to noise ratio
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Summary:The performance of a trellis coded four phase differential phase shift keying (TC QDPSK) modem with symbol decoding is compared with a continuous phase frequency shift keying (CPFSK) modem using noncoherent detection. The bit error rate (BER) performance as a function of signal-to-noise ratio per bit is obtained by simulation of both systems. It is shown that the trellis coded system provides a better BER performance for a given signal-to-noise ratio per bit. The bandwidth requirements for both systems are analyzed and compared. The TC 4DPSK system trades off part of the maximum achievable coding gain for a simpler implementation.< >
ISBN:9780780300859
0780300858
DOI:10.1109/NAECON.1991.165791