Results 11 to 20 of about 710,542 (267)
Adaptive EKF Based Estimation Method for Phase Noise in CO-OFDM/OQAM System
IEEE Access, 2020 Recently, dynamic optical network has attracted wide concern for its high efficiency and flexible configurations. Known for high spectral efficiency and flexible allocations of frequency resources orthogonal frequency-division multiplexing offset ...
Xiaobo Wang +4 more
doaj +1 more source
Non-coherent detection for ultraviolet communications with inter-symbol interference [PDF]
, 2020 Ultraviolet communication (UVC) serves as a promising supplement to share the responsibility for the overloads in conventional wireless communication systems.
Hu, Wenxiu +5 more
core +1 more source
Coherent Communication with Continuous Quantum Variables [PDF]
, 2006 The coherent bit (cobit) channel is a resource intermediate between classical and quantum communication. It produces coherent versions of teleportation and superdense coding.
Brun, Todd A. +2 more
core +3 more sources
Coherent communication with linear optics [PDF]
Physical Review A, 2008 We show how to implement several continuous-variable coherent protocols with linear optics. Noise can accumulate when implementing each coherent protocol with realistic optical devices. Our analysis bounds the level of noise accumulation. We highlight the connection between a coherent channel and a nonlocal quantum nondemolition interaction and give ...
Wilde, Mark M. +3 more
openaire +2 more sources
IEEE Photonics Journal, 2010 We describe a multi-carrier coherent-receiver scheme where the coherent beating between an ultra-high-speed multi-carrier signal and multiple optical local oscillators (OLOs) is conducted in a single optical hybrid, followed by carrier separation through
Xiang Liu +11 more
doaj +1 more source
Applied Sciences, 2020 Coherent optical transceivers offer significant advantages over direct-detect optical transceivers. However, both intradyne coherent transmitters (ICT) and intradyne coherent receivers (ICR) are more complicated and require careful calibration ...
Qiang Wang, Yang Yue
doaj +1 more source
Optimized Silicon QPSK Modulator With 64-Gb/s Modulation Speed
IEEE Photonics Journal, 2015 We demonstrate a compact silicon quadrature phase-shift keying (QPSK) modulator consisting of two nested Mach-Zehnder interferometers with a size of 4.5-mm2. The V11 · L of the modulator is 1.4 V · cm with an insertion loss of 8 dB.
Haike Zhu +8 more
doaj +1 more source
Classical capacity of Gaussian communication under a single noisy channel [PDF]
, 2015 A long-standing problem on the classical capacity of bosonic Gaussian channels has recently been resolved by proving the minimum output entropy conjecture.
Ji, Se-Wan +3 more
core +3 more sources
Secure Communication Using Mesoscopic Coherent States [PDF]
Physical Review Letters, 2003 We demonstrate theoretically and experimentally that secure communication using intermediate-energy (mesoscopic) coherent states is possible. Our scheme is different from previous quantum cryptographic schemes in that a short secret key is explicitly used and in which quantum noise hides both the bit and the key. This encryption scheme can be optically
Barbosa, Geraldo A. +3 more
openaire +3 more sources
Data-Aided Versus Blind Single-Carrier Coherent Receivers
IEEE Photonics Journal, 2010 Fiber-optic research in signal processing for the first generation of coherent communication systems was dominated by receivers with blind adaptation. Next-generation systems will require a scalable and modular design for higher order modulation formats.
Maxim Kuschnerov +8 more
doaj +1 more source