Results 1 to 10 of about 119,682 (113)

EVM and Achievable Data Rate Analysis of Clipped OFDM Signals in Visible Light Communication [PDF]

EURASIP Journal on Wireless Communications and Networking 2012, 2012:321, 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, F Peng, Guo Tong Zhou, H Elgala, H Elgala, H Elgala, H Kuhn, H Ochiai, H Ochiai, J Armstrong, J Armstrong, J Armstrong, J Bussgang, J Carruthers, J Kahn, J Tellado, M Abramowitz, M Grant, M Hanson, N Fernando, O Gonzalez, P Banelli, R Mesleh, Robert J Baxley, S Hranilovic, S Wilson, T Komine, T Komine, W Davenport, X Li, Zhenhua Yu   +30 more
core   +3 more sources

Coded Index Modulation for Non-DC-Biased OFDM in Multiple LED Visible Light Communication [PDF]

arXiv, 2015
Use of multiple light emitting diodes (LED) is an attractive way to increase spectral efficiency in visible light communications (VLC). A non-DC-biased OFDM (NDC OFDM) scheme that uses two LEDs has been proposed in the literature recently.
Alaka, S. P., Chockalingam, A., Narasimhan, T. Lakshmi   +2 more
core   +2 more sources

A Comparison of CP-OFDM, PCC-OFDM and UFMC for 5G Uplink Communications [PDF]

arXiv, 2018
Polynomial-cancellation-coded orthogonal frequency division multiplexing (PCC-OFDM) is a form of OFDM that has waveforms which are very well localized in both the time and frequency domains and so it is ideally suited for use in the 5G network.
Armstrong, Jean, He, Cuiwei, Kongara, Gayathri, Yang, Lei   +3 more
core   +2 more sources

Flip-OFDM for Optical Wireless Communications [PDF]

, 2011
We consider two uniploar OFDM techniques for optical wireless communications: asymmetric clipped optical OFDM (ACO-OFDM) and Flip-OFDM. Both techniques can be used to compensate multipath distortion effects in optical wireless channels. However, ACO-OFDM
Fernando, Nirmal, Hong, Yi, Viterbo, Emanuele   +2 more
core   +4 more sources

IRCI Free Range Reconstruction for SAR Imaging with Arbitrary Length OFDM Pulse [PDF]

, 2013
Our previously proposed OFDM with sufficient cyclic prefix (CP) synthetic aperture radar (SAR) imaging algorithm is inter-range-cell interference (IRCI) free and achieves ideally zero range sidelobes for range reconstruction.
Kong, Lingjiang, Xia, Xiang-Gen, Zhang, Tian-Xian   +2 more
core   +2 more sources

Modeling Interference Between OFDM/OQAM and CP-OFDM: Limitations of the PSD-Based Model [PDF]

arXiv, 2016
To answer the challenges put out by the next generation of wireless networks (5G), important research efforts have been undertaken during the last few years to find new waveforms that are better spectrally localized and less sensitive to asynchronism ...
Bader, Faouzi, Bodinier, Quentin, Palicot, Jacques   +2 more
core   +7 more sources

Alamouti OFDM/OQAM systems with time reversal technique [PDF]

arXiv, 2015
Orthogonal Frequency Division Multiplexing with Offset Quadrature Amplitude Modulation (OFDM/OQAM) is a multicarrier modulation scheme that can be considered as an alternative to the conventional Orthogonal Frequency Division Multiplexing (OFDM) with ...
Blel, Ilhem, Bouallegue, Ridha
core   +1 more source

Energy efficient time‐modulated OFDM directional modulation transmitters

Microwave and Optical Technology Letters, Volume 65, Issue 1, Page 5-13, January 2023., 2023
Abstract In this study, a reconfigurable power divider (RPD) enabled energy efficient direction modulation (DM) transmitter for orthogonal frequency division multiplexing (OFDM) modulated data transmission is proposed. The RPD can smartly select the output ports and operate as a power divider or a switch with appropriate control conditions.
Jiayu Hou, Jayakrishnan M. Purushothama, Haijun Fan, Chaoyun Song, Yuan Ding, Mathini Sellathurai   +5 more
wiley   +1 more source

Mitigating RF jamming attacks at the physical layer with machine learning

IET Communications, Volume 17, Issue 1, Page 12-28, January 2023., 2023
Abstract Wireless communication devices must be protected from malicious threats, including active jamming attacks, due to the widespread use of wireless systems throughout our every‐day lives. Jamming mitigation techniques are predominately evaluated through simulation or with hardware for very specific jamming conditions.
Marko Jacovic, Xaime Rivas Rey, Geoffrey Mainland, Kapil R. Dandekar   +3 more
wiley   +1 more source

Sphere‐decoding based equalization for reduced‐zero‐padding orthogonal time frequency space modulation

IET Communications, Volume 17, Issue 1, Page 63-72, January 2023., 2023
Abstract This work studies the equalization methods for the reduced zero‐padding version of the orthogonal time frequency space modulation. Here, the focus is on applications in low data rate scenarios such as the Internet of Things, and the case where the number of subcarriers and time slots are small will be considered.
Yuan Zhang, Peng Du
wiley   +1 more source