Design and Performance Investigation of Intersatellite Optical Wireless Communication System Employing Modulation Techniques
Sign Up to like & getrecommendations! Published in 2017 at "Wireless Personal Communications"
DOI: 10.1007/s11277-016-3651-8
Abstract: This work is focused to carry out the investigation of coherent optical quadrature phase shift keying (CO-QPSK), coherent optical quadrature amplitude modulation (CO-QAM), CO-8-QAM, CO-8-PSK, CO-16-QAM and CO-16-PSK techniques on intersatellite optical wireless communication system… read more here.
Keywords: wireless communication; qam; intersatellite optical; psk ... See more keywords
A novel adaptive QAM coder /decoder for bit and power loading in IM/DD OFDM-PON transmission system
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.166766
Abstract: Abstract For fully utilizing the system frequency response of optical intensity-modulation and direct-detection (IM/DD) passive optical network (PON) transmission system, this paper demonstrates a novel adaptive quadrature amplitude modulation (QAM) encoder /decoder for bit and… read more here.
Keywords: adaptive qam; qam; system; transmission ... See more keywords
Evaluation of an in situ QAM‐based Power Line Communication system for lithium‐ion batteries
Sign Up to like & getrecommendations! Published in 2021 at "IET Electrical Systems in Transportation"
DOI: 10.1049/els2.12033
Abstract: Power Line Communication (PLC) is used to transmit high-fidelity data on internal cell characteristics from within instrumented cells to an external Battery Management System (BMS). Using PLC is beneficial as it avoids the need for… read more here.
Keywords: qam; system; communication; battery ... See more keywords
Multi-Color Laser Diode Heterodyned 28-GHz Millimeter-Wave Carrier Encoded With DMT for 5G Wireless Mobile Networks
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2938263
Abstract: By using a multi-color laser diode carrier with orthogonal polarization and single-carrier modulation, the long-reach single-mode fiber (SMF) passive optical network and millimeter-wave wireless access network (WAN) with carrying narrow-band and channelized discrete multitone (DMT)… read more here.
Keywords: qam; carrier; ghz; color laser ... See more keywords
Security Analysis of QAM Quantum-Noise Randomized Cipher System
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2020.3009252
Abstract: Applying the quadrature amplitude modulation (QAM) format, quantum-noise randomized cipher (QNRC) systems hide the signal states in quantum phase noise and amplitude noise to prevent eavesdropping. In this paper, based on the traditional wire-tap channel… read more here.
Keywords: qam; system; security; noise ... See more keywords
A ${D}$ -Band Digital Transmitter with 64-QAM and OFDM Free-Space Constellation Formation
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2018.2824318
Abstract: A ${D}$ -band I/Q RF-DAC featuring two 6-bit DAC elements driven in quadrature, each with its own on-die antenna, and a total effective isotropic radiated power (EIRP) of 13.2 dBm, is demonstrated in a 45-nm… read more here.
Keywords: qam; carrier; tex math; free space ... See more keywords
On Impact of Imperfect CSI Over Hexagonal QAM for TAS/MRC-MIMO Cooperative Relay Network
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2019.2931433
Abstract: In this letter, we investigate the effect of imperfect channel state information (CSI) on quadrature amplitude modulation (QAM) schemes for a multi-input and multi-output (MIMO) variable gain non-regenerative cooperative network over the generalized Nakagami-m fading… read more here.
Keywords: qam; hexagonal qam; imperfect csi; impact imperfect ... See more keywords
Differential 16-QAM and 16-APSK for Uplink Massive MIMO Systems
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2017.2763143
Abstract: A differential quadrature amplitude modulation (QAM) scheme for uplink massive multiple-input-multiple-output systems was recently proposed; this scheme outperformed the conventional differential amplitude-phase shift keying (APSK) scheme for 1000 receiver antennas. However, the detectors of these… read more here.
Keywords: qam; detector; uplink massive; differential qam ... See more keywords
Metasurface-based Filters for High Data Rate THz Wireless Communications: Experimental Validation of a 14 Gbps OOK and 104 Gbps QAM-16 Wireless Link in the 300 GHz band
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Wireless Communications"
DOI: 10.1109/twc.2022.3168399
Abstract: We demonstrate the effectiveness of frequency selective surface filters in wireless communications at low terahertz (THz) frequencies. Full-wave simulations of pass-band filters designed at 270 GHz and 330 GHz are compared with measurements over 220–360… read more here.
Keywords: wireless; thz; metasurface based; qam ... See more keywords
Multi-dimensional QAM equivalent constellation using coherently coupled orbital angular momentum (OAM) modes in optical communication.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.030969
Abstract: In this work, a 1550 nm fiber-to-free-space optical communication link is successfully demonstrated employing the superposition of two coherently coupled orbital angular momentum (CCOAM) states. Information is encoded onto both the amplitude and phase of… read more here.
Keywords: qam; coherently coupled; optical communication; orbital angular ... See more keywords
Transmission of 4096-QAM OFDM at D-band.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.464283
Abstract: We experimentally demonstrate the transmission of multi-order quadrature amplitude modulation (QAM) orthogonal frequency division multiplexing (OFDM) millimeter wave signals at D-band. Meanwhile, the system nonlinearity analysis is also given, which is originated from the unsatisfactory… read more here.
Keywords: band; system; qam ofdm; transmission ... See more keywords