Results 81 to 90 of about 5,536 (185)
OFDM Waveform Design for Joint Radar-communication Based on Data Distortion
Leida xuebaoOrthogonal Frequency Division Multiplexing (OFDM) waveform design is one of the key physical layer technologies for achieving joint radar-communication.
Yan LIU, Xianrong WAN, Jianxin YI
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Low-Complexity OFDM Spectral Precoding
, 2019 This paper proposes a new large-scale mask-compliant spectral precoder (LS-MSP) for orthogonal frequency division multiplexing systems. In this paper, we first consider a previously proposed mask-compliant spectral precoding scheme that utilizes a ...
Bengtsson, Mats +4 more
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Results in EngineeringThis paper presents a novel approach of integrating an error vector magnitude with hierarchical modulation in which HM dynamically adjusts modulation schemes to optimize spectral efficiency under varying channel conditions.
U. Shyamala Devi, R.K. Mugelan
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Error vector magnitude analysis of fading SIMO channels relying on MRC reception
We analytically characterize the data-aided Error Vector Magnitude (EVM) performance of a Single Input Multiple Output (SIMO) communication system relying on Maximal Ratio Combining (MRC) having either independent or correlated branches that are non ...
El-Hajjar, Mohammed +5 more
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, 2018 This paper presents an evaluation of distortion and interference sources, namely, the harmonic distortion and antenna crosstalk, originating within a 2 x 2 millimeter-wave (mm-wave) multiple-input-multiple-output (MIMO) testbed.
Buisman, Koen +3 more
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Dual Polarization Optical Slicing for C-RAN in 5G Networks based on Radio-over-Fiber
Revista UIS IngenieríasThis paper investigates the potential of a dual polarized optical spectral slicing system to enable high-capacity optical links in the Cloud-Radio Access Network (C-RAN) segment based on Radio-over-Fiber (RoF) of a 5G network.
Gustavo Puerto-Leguizamón +1 more
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Parallel PWMs Based Fully Digital Transmitter with Wide Carrier Frequency Range
The Scientific World Journal, 2013 The carrier-frequency (CF) and intermediate-frequency (IF) pulse-width modulators (PWMs) based on delay lines are proposed, where baseband signals are conveyed by both positions and pulse widths or densities of the carrier clock.
Bo Zhou +4 more
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IEEE Photonics Journal, 2014 A system involving W-band (75-110 GHz) optical millimeter (mm)-wave generation using the external optical modulator (EOM) in a radio-over-fiber (RoF) link is presented for satisfying the requirements for multi-gigabit-per-second data rates.
S. E. Alavi +6 more
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Adaptive Modulation and Coding Using Neural Network Based SNR Estimation
IEEE Access, 2019 In this paper, we propose a novel Adaptive Modulation and Coding (AMC) scheme enabled by Artificial Neural Network (ANN) aided Signal-to-Noise power Ratio (SNR) estimation. The Power Spectral Density (PSD) values are trained for SNR classification and it
Shun Kojima +2 more
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, 2012 National audienceIn this paper, a numerical model of semiconductor optical amplifiers (SOA) is experimentally validated in terms of non-linearity of the SOA, particularly the phase-amplitude coupling factor and four-wave mixing (FWM). This model was then
Khaleghi, Hamidreza +3 more
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