Results 1 to 10 of about 47,365 (251)
Modulator-free quadrature amplitude modulation signal synthesis. [PDF]
Nat Commun, 2014 AbstractThe ability to generate high-speed on–off-keyed telecommunication signals by directly modulating a semiconductor laser’s drive current was one of the most exciting prospective applications of the nascent field of laser technology throughout the 1960s.
Liu Z +6 more
europepmc +8 more sources
Digital Demodulator of the Quadrature Amplitude Modulation Signals [PDF]
Measurement Science Review, 2018 In this paper, the digital algorithm and the device for the demodulation of the quadrature amplitude modulation signals are considered. The fundamental advantages of our approach are simple hardware implementation, minimal number of arithmetic operations
Chernoyarov Oleg +4 more
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Asymptotic Security of Continuous-Variable Quantum Key Distribution with a Discrete Modulation
Physical Review X, 2019 We establish a lower bound on the asymptotic secret key rate of continuous-variable quantum key distribution with a discrete modulation of coherent states.
Shouvik Ghorai +3 more
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Amplify–Quantize–Forward Relay Channel With Quadrature Amplitude Modulation [PDF]
IEEE Access, 2022 This paper considers an amplify–quantize–forward (AQF) relay channel with $M$ -ary quadrature amplitude modulation, where the relay implements a uniform quantization for the amplified received signal and forwards it to the destination. Two
Xianglan Jin
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Integrating fixed and mobile coherent optical access networks for unified broadband services [PDF]
Communications EngineeringThe integration of fixed and mobile optical access networks can enhance resource utilization, reduce network complexity, and lower deployment costs.
Qi Wu +10 more
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Differential Space-Time Coding Scheme Using Star Quadrature Amplitude Modulation Method [PDF]
EURASIP Journal on Advances in Signal Processing, 2006 Differential space-time coding (DSTC) has received much interest as it obviates the requirement of the channel state information at the receiver while maintaining the desired properties of space-time coding techniques. In this paper, by introducing star
Bi Guangguo, Yu Xiangbin, Xu DaZhuan
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Noisy Index Coding with Quadrature Amplitude Modulation (QAM) [PDF]
CoRR, 2015 This paper discusses noisy index coding problem over Gaussian broadcast channel. We propose a technique for mapping the index coded bits to M-QAM symbols such that the receivers whose side information satisfies certain conditions get coding gain, which we call the QAM side information coding gain.
Anjana Ambika Mahesh, B. Sundar Rajan
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A neural demodulator for quadrature amplitude modulation signals
Proceedings of International Conference on Neural Networks (ICNN'96), 2002 A neural demodulator is proposed for quadrature amplitude modulation (QAM) signals. It has several important features compared with conventional linear methods. First, necessary functions for the QAM demodulation, including wide-band noise rejection, pulse waveform shaping, and decoding, can be embedded in a single neural network. This means that these
Katsuyoshi Ohnishi, Kenji Nakayama
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Российский технологический журнал, 2021 Quadrature amplitude modulation (QAM) is used for high-speed information transmission in many radio systems and, in particular, in DVB-S and DVB-S2/S2X digital satellite television systems.
G. V. Kulikov, A. A. Lelyukh
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IEEE Photonics Journal, 2013 We propose a novel method of compensation for imbalance between in-phase (I) and quadrature (Q) channels in the front-end circuit of digital coherent optical receivers.
Md. Saifuddin Faruk, Kazuro Kikuchi
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