Results 1 to 10 of about 15,939 (189)

Performance Analyses of Energy Detection Based on Square-Law Combining in MIMO-OFDM Cognitive Radio Networks [PDF]

open access: yesSensors, 2021
Cognitive radio (CR) technology has the potential to detect and share the unutilized spectrum by enabling dynamic spectrum access. To detect the primary users’ (PUs) activity, energy detection (ED) is widely exploited due to its applicability when it ...
Josip Lorincz   +2 more
doaj   +2 more sources

A Survey on MIMO-OFDM Systems: Review of Recent Trends

open access: yesSignals, 2022
MIMO-OFDM is a key technology and a strong candidate for 5G telecommunication systems. In the literature, there is no convenient survey study that rounds up all the necessary points to be investigated concerning such systems.
Houda Harkat   +4 more
doaj   +1 more source

Signal detection of large scale MIMO physical layer space optical communication system based on genetic algorithm

open access: yesResults in Physics, 2023
In order to understand the signal detection design of large-scale MIMO physical layer spatial optical communication systems, the author proposes a research on signal detection of large-scale MIMO physical layer spatial optical communication systems based
Min Ma
doaj   +1 more source

Fronthaul Optical Links Using Sub-Nyquist Sampling Rate ADC for B5G/6G Sub-THz Ma-MIMO Beamforming

open access: yesIEEE Access, 2022
This paper details fronthaul optical links using sub-Nyquist sampling rate analog-to-digital converters (ADCs) for Beyond fifth generation (B5G) and 6G sub-THz massive multiple-input multiple-output (Ma-MIMO) beamforming.
Pin-Hsuan Ting   +5 more
doaj   +1 more source

Fast Link Adaptation for MIMO OFDM [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2010
We investigate link-quality metrics (LQMs) based on raw bit-error-rate, effective signal-to-interference-plus-noise ratio, and mutual information (MI) for the purpose of fast link adaptation (LA) in communication systems employing orthogonal frequency-division multiplexing and multiple-input–multipleoutput (MIMO) antenna technology.
Jensen, Tobias Lindstrøm; id_orcid 0000-0003-4262-0577   +3 more
openaire   +2 more sources

On MIMO-OFDM with Coding and Loading

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
Orthogonal frequency-division multiplexing (OFDM) with multiple transmit and multiple receive antennas (MIMO-OFDM) is considered a candidate for high-data rate communication in various existing and forthcoming system standards.
Harry Z. B. Chen   +2 more
doaj   +2 more sources

A Next Generation Wireless Simulator Based on MIMO-OFDM: LTE Case Study

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
The complexity of next generation wireless systems is growing exponentially. The combination of Multiple-Input Multiple-Output (MIMO) technology with Orthogonal Frequency Division Multiplexing (OFDM) is considered as the best solution to provide high ...
Juan J. Sánchez-Sánchez   +3 more
doaj   +2 more sources

A Transmitter Design for the Multi-beam CC-OFDM Azimuth Scanning MIMO Radar

open access: yesIEEE Access, 2022
A conventional phased array radar provides a high gain by transmitting coherent signals over a large number of antenna elements. However, it does not provide a full time-on-target because it produces a beam that scans the whole angular view of the radar.
Devy Kuswidiastuti   +2 more
doaj   +1 more source

Partial Fractional Fourier Transform (PFrFT)-MIMO-OFDM for Known Underwater Acoustic Communication Channels

open access: yesInformation, 2021
Communication over doubly selective channels (both time and frequency selective) suffers from significant intercarrier interference (ICI). This problem is severe in underwater acoustic communications.
Yixin Chen   +2 more
doaj   +1 more source

Performance Analysis of MIMO-OFDM System Using Predistortion Neural Network with Convolutional Coding Addition to Reduce SDR-Based HPA Nonlinearity

open access: yesEmitter: International Journal of Engineering Technology, 2023
In recent years, the development of communication technology has advanced at an accelerated rate. Communication technologies such as 4G, 5G, Wi-Fi 5 (802.11ac), and Wi-Fi 6 (802.11ax) are extensively used today due to their excellent system quality and ...
Melki Mario Gulo   +2 more
doaj   +1 more source

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