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   Articles with "qam" as a keyword



Design and Performance Investigation of Intersatellite Optical Wireless Communication System Employing Modulation Techniques

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recommendations! 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

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recommendations! 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

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recommendations! 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

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recommendations! 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

Adaptive 3D M-QAM Using Cross Polarized Antenna

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recommendations! Published in 2025 at "IEEE Access"

DOI: 10.1109/access.2025.3581437

Abstract: Wireless communication is a fundamental aspect of everyday life. Modern mobile applications such as the Internet of Things (IoT), high-resolution video streaming, connected cars, smart cities, and telehealth care have a universal presence these days.… read more here.

Keywords: adaptive qam; using cross; qam using; qam ... See more keywords

Quadruplex Independent Vector Microwave Signal Transmission Over 100 km Using DSM and Optical Polarization Multiplexing

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recommendations! Published in 2025 at "Journal of Lightwave Technology"

DOI: 10.1109/jlt.2024.3449079

Abstract: In this study, we present a novel multi-vector microwave signal generation and detection scheme designed to cater to long-distance multi-user amplifier-less access systems with different service requirements, which provides a promising solution for realizing efficient… read more here.

Keywords: transmission; vector; quadruplex independent; vector microwave ... See more keywords

Security Analysis of QAM Quantum-Noise Randomized Cipher System

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recommendations! 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

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recommendations! 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

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recommendations! 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

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recommendations! 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

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recommendations! 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