Results 11 to 20 of about 5,536 (185)
EVM and Achievable Data Rate Analysis of Clipped OFDM Signals in Visible Light Communication [PDF]
, 2012 Orthogonal frequency division multiplexing (OFDM) has been considered for visible light communication (VLC) thanks to its ability to boost data rates as well as its robustness against frequency-selective fading channels.
D O’Brien +30 more
core +2 more sources
Millimeter-wave communication for a last-mile autonomous transport vehicle [PDF]
, 2020 Low-speed autonomous transport of passengers and goods is expected to have a strong, positive impact on the reliability and ease of travelling. Various advanced functions of the involved vehicles rely on the wireless exchange of information with other ...
Higgins, Matthew D. +4 more
core +1 more source
A case for adaptive sub-carrier level power allocation in OFDMA networks [PDF]
, 2012 In today's OFDMA networks, the transmission power is typically fixed and the same for all the sub-carriers that compose a channel. The sub-carriers though, experience different degrees of fading and thus, the received power is different for different sub-
Addepalli, S +5 more
core +2 more sources
Investigation into Using Compensation for the Nonlinear Effects of the Output of LEDs in Visible Light Communication Systems [PDF]
, 2019 This paper investigate the effects of the nonlinear output power to the input current transfer function of a light emitting diode (LED) used as the transmitter in visible light communication systems, and proposes a compensation technique to mitigate the ...
Burton, Andrew +5 more
core +2 more sources
Calculation of the Performance of Communication Systems from Measured Oscillator Phase Noise [PDF]
, 2013 Oscillator phase noise (PN) is one of the major problems that affect the performance of communication systems. In this paper, a direct connection between oscillator measurements, in terms of measured single-side band PN spectrum, and the optimal ...
Eriksson, Thomas +4 more
core +2 more sources
IEEE Access, 2019 Latency, error vector magnitude (EVM) and compression ratio (CR) are performance evaluation factors of IQ data compression. The purposes of IQ data compression are to minimize the latency, EVM and to maximize the CR.
Jewon Lee, Eunhee Hyun, Joon-Young Jung
doaj +1 more source
Adaptive Modulation Schemes for OFDM and SOQPSK Using Error Vector Magnitude (EVM) and Godard Dispersion [PDF]
, 2014 Abstract : n this paper, we develop a new approach which enables adaptation across two modulation schemes in the iNET standard: orthogonal frequency-division multiplexing (OFDM) and shaped-offset quadrature phased-shift keying (SOQPSK). We present the error vector magnitude (EVM) for OFDM and second-order Godard dispersion (D(2)) for SOQPSK as our link
Enkuang D. Wang +2 more
openaire +1 more source
On the Impact of Hardware Impairments on Massive MIMO [PDF]
, 2014 Massive multi-user (MU) multiple-input multiple-output (MIMO) systems are one possible key technology for next generation wireless communication systems. Claims have been made that massive MU-MIMO will increase both the radiated energy efficiency as well
Athley, Fredrik +8 more
core +2 more sources
Estimation of BER from Error Vector Magnitude for Optical Coherent Systems
Photonics, 2016 This paper presents the estimation of bit error ratio (BER) from error vector magnitude (EVM) for M-ary quadrature amplitude modulation (QAM) formats in optical coherent systems employing carrier phase recovery with differential decoding to compensate ...
Irshaad Fatadin
doaj +1 more source
IEEE Access, 2022 Error vector magnitude (EVM) and out-of-band emissions are key metrics for evaluating in-band and out-band distortions introduced by all potential non-idealities in the transmitters of wireless systems. As EVM is a measure of the quality of the modulated
Angela Hernandez-Solana +5 more
doaj +1 more source