Flexible and fast multi‐level modulation format identification using optical orthogonal frequency division multiplexing redundancy subcarriers
Sign Up to like & getrecommendations! Published in 2021 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32906
Abstract: Compared with the orthogonal frequency division multiplexing (OFDM) communication system, the subcarrier‐index modulation OFDM communication system can alleviate the problem of peak‐to‐average power ratio and the frequency offset sensitivity. Therefore, the problem of inter carrier… read more here.
Keywords: modulation format; frequency division; modulation; frequency ... See more keywords
16QAM spectral efficiency frequency division multiplexing transmission with Tomlinson–Harashima precoding for intensity modulation and direct detection optical links
Sign Up to like & getrecommendations! Published in 2020 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-020-02520-4
Abstract: In the spectral efficient frequency division multiplexing (SEFDM) system, in order to minimize mutual interference between subcarriers, a detector should be introduced at the receiver to handle the interference, but increases the complexity of system.… read more here.
Keywords: division multiplexing; intensity modulation; transmission; frequency division ... See more keywords
Performance Evaluation of 5G Modulation Techniques
Sign Up to like & getrecommendations! Published in 2021 at "Wireless Personal Communications"
DOI: 10.1007/s11277-021-08831-3
Abstract: Higher data rate, increased capacity, higher mobility, lower latency and better quality are the mobile communication prime objectives need to improve in the near future. This paper proposes the suggested different modulation techniques for future… read more here.
Keywords: modulation techniques; modulation; frequency division; performance evaluation ... See more keywords
Use of bi-level pulsed frequency-division excitation for improving blood oxygen saturation precision
Sign Up to like & getrecommendations! Published in 2018 at "Measurement"
DOI: 10.1016/j.measurement.2018.07.076
Abstract: Abstract The measurement of blood oxygen saturation (SpO 2 ) plays an increasingly key role in medical monitoring and health detection. In order to improve SpO 2 precision, this paper proposes a new method, namely… read more here.
Keywords: division; frequency division; level; blood oxygen ... See more keywords
Maximum Ratio Transmission Based Generalized Frequency Division Multiplexing over Gamma-Gamma Channel
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2021.126965
Abstract: Abstract Generalized frequency division multiplexing (GFDM) can be a desirable option for free space optical communication systems since it has several advantages such as good spectral efficiency, low peak-to-average power ratio (PAPR) and low co-channel… read more here.
Keywords: ratio transmission; frequency division; division multiplexing; maximum ratio ... See more keywords
Superposition Coded-Orthogonal Frequency Division Multiplexing
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Access"
DOI: 10.1109/access.2018.2814050
Abstract: Orthogonal frequency division multiplexing (OFDM) technique is the most used approach in various wireless communication technologies due to its implementation advantages. However, OFDM has also some significant drawbacks, such as the sensitivity against real-time impairments… read more here.
Keywords: division multiplexing; real time; time; frequency division ... See more keywords
Impact of Perturbations on Nonlinear Frequency-Division Multiplexing
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2798412
Abstract: Nonlinear frequency-division multiplexing (NFDM) is a communication scheme in which users’ signals are multiplexed in the nonlinear Fourier domain. The contributions of this paper are twofold. First, the achievable information rates (AIRs) of NFDM based… read more here.
Keywords: division multiplexing; division; frequency division; nonlinear frequency ... See more keywords
Experimental Demonstration of Nonlinear Frequency Division Multiplexing Transmission With Neural Network Receiver
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2020.3016685
Abstract: Nonlinear frequency division multiplexing (NFDM) communication systems that are based on the nonlinear Fourier transform (NFT), have seen a rapid improvement in performance and transmission reach over just a few years. However, such an improvement… read more here.
Keywords: frequency division; division multiplexing; nonlinear frequency; transmission ... See more keywords
Analysis and Design of Integrated Active Cancellation Transceiver for Frequency Division Duplex Systems
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2017.2700360
Abstract: An active transmitter (TX) cancellation scheme enabling integration of the antenna interface for frequency division duplex systems is presented. A replica of the TX current is synthesized in shunt with the receiver (RX) by a… read more here.
Keywords: duplex systems; frequency division; cancellation; division duplex ... See more keywords
SVD-Based Design for Non-Orthogonal Frequency Division Multiplexing
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2020.3045719
Abstract: Conventional non-orthogonal frequency division multiplexing (NFDM) suffers from inter-channel interference (ICI) due to the loss of orthogonality among subcarriers. The ICI significantly degrades system performance and complicates the design of the receiver. In this letter… read more here.
Keywords: frequency division; non orthogonal; division multiplexing; design ... See more keywords
Why Noise and Dispersion May Seriously Hamper Nonlinear Frequency-Division Multiplexing
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2017.2722040
Abstract: The performance of optical fiber systems based on nonlinear frequency-division multiplexing (NFDM) or on more conventional transmission techniques is compared through numerical simulations. Some critical issues affecting NFDM systems—namely, the strict requirements needed to avoid… read more here.
Keywords: division multiplexing; dispersion; frequency division; nonlinear frequency ... See more keywords