Results 111 to 120 of about 76,661 (236)
IEEE Access, 2019 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 ...
Huai-Yung Wang +4 more
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Low-Complexity Detection of High-Order QAM Faster-Than-Nyquist Signaling
IEEE Access, 2017 Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal transmission technique to considerably improve the spectral efficiency. This paper presents the first attempt in the literature to estimate the transmit data symbols of any high-order ...
Ebrahim Bedeer +2 more
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Applied Sciences, 2019 In this article, we review the latest progress on data center interconnect (DCI). We then discuss different perspectives on the 400G pluggable module, including form factor, architecture, digital signal processing (DSP), and module power consumption ...
Yang Yue, Qiang Wang, Jon Anderson
semanticscholar +1 more source
Capacity of 60 GHz Wireless Communications Based on QAM
Journal of Applied Mathematics, 2014 With apparent advantages of the several GHz license-free spectrums, 10 W maximum transmit power, and so forth, 60 GHz wireless communication technology has become the first choice for Gbps level short-range wireless communications.
Jingjing Wang +5 more
doaj +1 more source
New QAM Complementary Sequences for Control of Peak Envelope Power of OFDM Signals
IEEE Access, 2019 By developing new mathematical descriptions of 4q (integer q 2) quadrature amplitude modulation (QAM) constellation, a novel construction producing 4q-QAM complementary sequences (CSs) of length 2m (integer m 2) is presented.
Yue Zeng +5 more
doaj +1 more source
IEEE Photonics Journal, 2019 Modulation format identification (MFI) is necessary for future elastic optical networks. We propose an MFI scheme based on the amplitude deviation analysis of the received optical communication signal.
Zhao Zhao +3 more
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Engineering Science and Technology, an International JournalA new mmWave transmitter architecture with multibeam-based segmented beamforming arrays (SBAs) for high-efficiency and secure communication is proposed.
Seung-Won Oh, Woo-Hee Lim, Han Lim Lee
doaj +1 more source
A Power-Efficient Soft-Output Detector for Spatial-Multiplexing MIMO Communications
Journal of Electrical and Computer Engineering, 2012 VLSI implementation of a configurable power-efficient MIMO detector is proposed to support 4×4 spatial multiplexing and modulation from QPSK to 64-QAM.
Hsiao-Chi Wang +3 more
doaj +1 more source
Adaptive Modulation (QPSK, QAM)
, 2013 In this paper, introduced below are the concepts of digital modulation used in many communication systems today. Techniques described include quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) and how these techniques can be used to increase the capacity and speed of a wireless network.
openaire +2 more sources
IEEE Open Journal of the Communications SocietyWith an objective of ubiquitous connectivity around the world with enhanced spectral efficiency, intelligent reflecting surfaces (IRS) integrated satellite-terrestrial communications is a topic of research interest specially in infrastructure-deficient ...
Parvez Shaik +5 more
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