Results 21 to 30 of about 522,687 (294)
CPM-OFDM Performance over Underwater Acoustic Channels
Journal of Marine Science and Engineering, 2021 We propose and evaluate the performance of a continuous phase modulation based orthogonal frequency division multiplexing (CPM-OFDM) transceiver for underwater acoustic communication (UAC).
Imran A. Tasadduq +2 more
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An experimental study of intermodulation effects in an atomic fountain frequency standard [PDF]
, 2007 The short-term stability of passive atomic frequency standards, especially in pulsed operation, is often limited by local oscillator noise via intermodulation effects.
G. Dudle +7 more
core +4 more sources
INCREASING THE SPECIFIC RATE OF CONTINUOUS PHASE MODULATION SIGNALS
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2019 A method has been developed for increasing the specific rate of frequency modulation signals with a continuous phase based on the use of the properties of composite Walsh-Barker sequences.
Victor Banket, Sergei Manakov
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Spatially coupled turbo-coded continuous phase modulation: asymptotic analysis and optimization
EURASIP Journal on Wireless Communications and Networking, 2020 For serially or parallel concatenated communication systems, spatial coupling techniques enable to improve the threshold of these systems under iterative decoding using belief propagation (BP).
Tarik Benaddi, Charly Poulliat
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Leida xuebao, 2021 Micromotion targets can enable microDoppler modulation on electromagnetic waves owing to their motion components in different directions, resulting in the defocusing effects of the target imaging features along the azimuth direction.
Junjie WANG +5 more
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Pre-Equalization for Continuous Phase Modulation
IEEE Transactions on Wireless Communications, 2011 In this paper, a channel precoding technique is proposed for M-ary continuous phase modulation (CPM) for multipath downlink channels. The proposed pre-equalizer, based on the approximation of CPM signals by complex exponential functions, applies modulo-arithmetic operations to ensure the stability as in Tomlinson-Harashima method.
Oezguel, Baris +3 more
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Continuous-wave phase-matched molecular optical modulator [PDF]
Scientific Reports, 2016 AbstractIn optical modulation, the highest available modulation rate is basically limited to the GHz frequency range at best. This is because optical modulation is often performed using electro-optic or acousto-optic effects that require application of an external signal to solid-state nonlinear optical materials. Here we describe optical modulation of
Shin-ichi Zaitsu +3 more
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Applied Sciences, 2023 In this paper, continuous phase modulation-generalized frequency division multiplexing (CPM-GFDM) is proposed. The performance of CPM-GFDM is evaluated over Gaussian and frequency selective fading channels.
Imran A. Tasadduq
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Improving radar performance with constant envelope multi-level chirp
Tehnički Glasnik, 2019 M-level Continuous Phase Chirp Modulation is considered for data transmission. In this article, we would like to propose a new approach to transmitting information with the help of multi-level wave guide signaling. The main problem with the classic chirp
Farhad Bahadori-Jahromi +1 more
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Noncoherent sequence detection of continuous phase modulations [PDF]
IEEE Transactions on Communications, 1999 In this paper, noncoherent sequence detection (NSD) proposed Colavolpe and Raheli (see Proc. IEEE Int. Conf. Commun. (ICC '97), Montreal, p.21-5, 1997, IEEE Commun. Lett., 1998, and Proc. IEEE Intern. Conf. Commun. (ICC '98), Atlanta, GA, USA, p.438-43, 1998) is extended to continuous phase modulation (CPM).
COLAVOLPE, Giulio, RAHELI, Riccardo
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