Results 21 to 30 of about 125,865 (258)

Broadband Measurement of Error Vector Magnitude for Microwave Vector Signal Generators Using a Vector Network Analyzer

IEEE Transactions on Instrumentation and Measurement, 2022
A frequency-domain method is proposed for the broadband measurement of error vector magnitude (EVM) for vector signal generators (VSGs). The technique is based on frequency-swept narrowband acquisitions performed with a vector network analyzer (VNA) by exploiting a stable (yet unknown) reference signal to obtain phase-repeatable measurements ...
Angelotti, AM, Gibiino, GP, Santarelli, A, Traverso, PA   +3 more
openaire   +1 more source

Nondata-Aided Error Vector Magnitude Analysis of $\eta-\mu$ Fading Channels in Device-to-Device Communications

IEEE Access, 2019
Transmission in non-line-of-sight (NLOS) conditions has a poor throughput in device-to-device (D2D) communications. In order to achieve high throughput, adaptive modulation has been selected as a spectrally-efficient transmission technology.
Fan Yang, Haiwei Mao, Xiaoping Zeng, Xin Jian, Shu Fu, Bin Wu, Xiaoheng Tan, Jihua Zhou   +7 more
doaj   +1 more source

A Simple and Efficient IQ Data Compression Method Based on Latency, EVM, and Compression Ratio Analysis

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

On Linear and Circular Approach to GPS Data Processing: Analyses of the Horizontal Positioning Deviations Based on the Adriatic Region IGS Observables

Data, 2021
Global and regional positional accuracy assessment is of the highest importance for any satellite navigation system, including the Global Positioning System (GPS).
Davor Šakan, Serdjo Kos, Biserka Drascic Ban, David Brčić   +3 more
doaj   +1 more source

Error Vector Magnitude Analysis of Fading SIMO Channels Relying on MRC Reception [PDF]

IEEE Transactions on Communications, 2016
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 nonidentically distributed.
Thomas, Varghese Antony, Kumar, Suman, Kalyani, Sheetal, El-Hajjar, Mohammed, Giridhar, K., Hanzo, Lajos   +5 more
openaire   +3 more sources

Linear Regression vs. Deep Learning for Signal Quality Monitoring in Coherent Optical Systems

IEEE Photonics Journal, 2022
Error vector magnitude (EVM) is a metric for assessing the quality of m-ary quadrature amplitude modulation (mQAM) signals. Recently proposed deep learning techniques, e.g., feedforward neural networks (FFNNs) -based EVM estimation scheme leverage fast ...
Yuchuan Fan, Xiaodan Pang, Aleksejs Udalcovs, Carlos Natalino, Lu Zhang, Sandis Spolitis, Vjaceslavs Bobrovs, Richard Schatz, Xianbin Yu, Marija Furdek, Sergei Popov, Oskars Ozolins   +11 more
doaj   +1 more source

On the Equalization of an OFDM-Based Radio-over-Fiber System Using Neural Networks [PDF]

Radioengineering, 2017
In this study the impact of a Radio-over-Fiber (RoF) subsystem on the performance of Orthogonal Frequency Division Multiplexing (OFDM) system is evaluated.
L. Safari, G. Baghersalimi, A. Karami, A. Kiani   +3 more
doaj  

Nondata-aided error vector magnitude based adaptive modulation over rapidly time-varying channels

Tongxin xuebao, 2017
A novel nondata-aided error vector magnitude based adaptive modulation(NDA-EVM-AM) was proposed to solve the problem of lower spectral efficiency over rapidly time-varying wireless channels.Namely,NDA-EVM was considered as a metric to reflect the rapid ...
Fan YANG, Xiao-ping ZENG, Xin JIAN, Ji-hua ZHOU, Ding-liang RUAN, Yi-wen GAO   +5 more
doaj   +2 more sources

V-Band Six-Port Interferometer Receiver: High Data-Rate Wireless Applications, BER and EVM Analysis, and CFO Compensation

IEEE Access, 2021
The realization and analysis of an implemented V-band six-port demodulator, operating over 60 GHz band, are presented in this paper. The performance of the design in real-time high-data-rate wireless data transmission is strongly proved using different ...
Mansoor Dashti Ardakani, Serioja Ovidiu Tatu   +1 more
doaj   +1 more source

Experimental Demonstration and Performance Enhancement of 5G NR Multiband Radio over Fiber System Using Optimized Digital Predistortion

Applied Sciences, 2021
This paper presents an experimental realization of multiband 5G new radio (NR) optical front haul (OFH) based radio over fiber (RoF) system using digital predistortion (DPD).
Muhammad Usman Hadi, Muhammad Awais, Mohsin Raza, Muhammad Ikram Ashraf, Jian Song   +4 more
doaj   +1 more source