Soft decision Viterbi decoder for FSK demodulation under fast fading channel

Nojima, Daisuke; Nagao, Yuhei; Kurosaki, Masayuki; Ochi, Hiroshi; Ishikawa, Akira; Shugo, Fukagawa; Tahira, Akihiro

doi:10.1109/icce.2010.5670714

Cited by 4 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The block diagram of the 8FSK hard and soft demodulator is presented in Figure 11 . The MFSK modulated signal

for the order M=8 is composed of eight elementary components [ 11 ], as shown in Equation (6):

…”

Section: Nn-based 8fsk Demodulator and Its Evaluationmentioning

confidence: 99%

See 1 more Smart Citation

NN-Based 8FSK Demodulator for the Covert Channel

Grzesiak

Piotrowski

2022

Sensors

View full text Add to dashboard Cite

In this article, a superposition-based covert channel and its demodulator were proposed and examined. As a covert waveform, an 8FSK modulation was selected. The impact of the channel estimation error and resulting imperfect SIC operation (successive interference cancelation) on the covert information demodulation process was considered. Especially for this imperfection, an NN-based demodulator was proposed. The superiority of this solution over the traditional 8FSK correlator-based receiver was examined for various cases, including the hard- and soft-decision detectors. It was proven that, although NN does not provide BER values equal to zero, even for the perfect SIC, it generally overcomes the traditional correlator-based 8FSK demodulator. Simulation results showed that the NN-base demodulator, in the case of additional covert channel coding, provides error-free demodulation, even for four-times greater channel gain error.

show abstract

“…The block diagram of the 8FSK hard and soft demodulator is presented in Figure 11 . The MFSK modulated signal

for the order M=8 is composed of eight elementary components [ 11 ], as shown in Equation (6):

…”

Section: Nn-based 8fsk Demodulator and Its Evaluationmentioning

confidence: 99%

“…In the literature, much less attention has been devoted to FSK demodulators, when it comes to soft demodulation and neural networks, in general. A soft-decision Viterbi decoder for FSK demodulation was presented in [ 11 ]. However, it deals with frequency discriminator for FSK demodulation.…”

Section: Introductionmentioning

confidence: 99%