16 papers · ranked by Valyu relevance
Ankit Chadha, Neha S. Satam, Beena Ballal
Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technique which is very much popular in new wireless networks of IEEE standard, digital television, audio broadcasting and 4G mobile communications. The main benefit of OFDM over single-carrier schemes is its ability to cope with severe…
Tuncay Eren, Aydin Akan, Dimitrie C. Popescu
Computational complexity is one of the drawbacks of orthogonal frequency division multiplexing (OFDM)-index modulation (IM) systems. In this study, a novel IM technique is proposed for OFDM systems by considering the null subcarrier locations (NSC-OFDM-IM) within a predetermined group in the frequency domain. So far, a…
Liakot Ali, Farshad, Jun Ma
Due to Hardware Trojan (HT), trustworthiness of Integrated Circuit (IC) supply chain is a burning issue in Semiconductor Industry nowadays. Over the last decade, extensive research has been carried on HT detection methods for digital circuits. However, the HT issue remains largely unexplored in the domain of Analog…
Khaled Ramadan, Emad S. Hassan, Mohammad Reza Ghavidel Aghdam
For the design of Orthogonal Frequency Division Multiplexing (OFDM), the Discrete Wavelet Transform (DWT) offers significant benefits over the classic Discrete Fourier Transform (DFT). This article proposes a Joint Low Complexity Regularized Zero Forcing-Wavelet Domain Equalizer (JLCRLZF-WDE) as substitute to a…
Smita Jolania, Sandeep Toshniwal
— OFDM signals demonstrates high fluctuations termed as Peak to Average Power Ratio (PAPR).The problem of OFDM is the frequent occurrence of high Peaks in the time domain signal which in turn reduces the efficiency of transmit high power amplifier.In this paper we discussed clipping and filtering technique which is…
Ahmad RezazadehReyhani, Arman Farhang, Mingyue Ji, Rong Rong Chen + 1 more
'Behrouz Farhang‐Boroujeny'] Abstract—Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme designed in the Doppler-delay domain to fully exploit time and frequency diversity of general timevarying channels. In this paper, we present a novel discrete-time analysis of OFDM-based OTFS transceiver with a…
S. Ramesh, R. Seshasayanan
In this study, a baseband OFDM-MIMO framework with channel timing and estimation synchronization is composed and executed utilizing the FPGA innovation. The framework is prototyped in light of the IEEE 802.11a standard and the signals transmitted and received utilizing a data transmission of 20 MHz. With the assistance…
Abdelrahman Abushattal, Salah Eddine Zegrar, Ayhan Yazgan, Hüseyin Arslan + 1 more
'Hüseyin Arslan' 'Hendrik Rogier'] The orthogonal time-frequency space (OTFS) waveform exceeds the challenges that face orthogonal frequency division multiplexing (OFDM) in a high-mobility environment with high time-frequency dispersive channels. Since radio frequency (RF) impairments have a direct impact on waveform…
A.M. Monk, Ronny Hadani, M.K. Tsatsanis, Shlomo Rakib
In this paper we introduce a new 2D modulation technique called OTFS (Orthogonal Time Frequency & Space) that transforms information carried in the Delay-Doppler coordinate system to the familiar time-frequency domain utilized by traditional modulation schemes such as OFDM, CDMA and TDMA. OTFS converts the fading…
Ronny Hadani, A.M. Monk
In this paper, we introduce a new 2D modulation scheme referred to as OTFS (Orthogonal Time Frequency & Space) that multiplexes information QAM symbols over new class of carrier waveforms that correspond to localized pulses in a signal representation called the delay-Doppler representation. OTFS constitutes a far…
Yu Zhou, Haoran Yin, Jiaojiao Xiong, Shiyu Song + 4 more
'Jinming Du' 'Haibo Chen' 'Yanqun Tang'] Abstract—In the high-mobility scenarios of next-generation wireless communication systems (beyond 5G/6G), the performance of orthogonal frequency division multiplexing (OFDM) deteriorates drastically due to the loss of orthogonality between the subcarriers caused by large…
Mathieu Thomas, Stéphanie Thépot, Sophie Jouanne-Pin, Nathalie Galic + 2 more
While modern agriculture relies on genetic homogeneity in the field, some farmers grow genetically heterogeneous crops and exchange seeds. Such diversifying practices associated with seed recycling may allow adaptation of crops to their environment. This socio-genetical model constitutes an original experimental…
R. Q. Shaddad, A. B. Mohammad, S. A. Al-Gailani, A. M. Al-Hetar
The optical fiber is well adapted to pass multiple wireless signals having different carrier frequencies by using radio-over-fiber (ROF) technique. However, multiple wireless signals which have the same carrier frequency cannot propagate over a single optical fiber, such as wireless multi-input multi-output (MIMO)…
Antonios Stylogiannis, Ludwig Prade, Sarah Glasl, Qutaiba Mustafa + 2 more
Optoacoustics (OA) is overwhelmingly implemented in the Time Domain (TD) to achieve a high Signal-to-Noise-Ratio (SNR). Implementations in the Frequency Domain (FD) have been proposed, but have not offered competitive advantages over TD methods to reach high dissemination. It is therefore commonly believed that the TD…
Charles Poirier, Maxime Descoteaux
Numerous filtering methods have been proposed for estimating asymmetric orientation distribution functions (ODFs) for diffusion magnetic resonance imaging (dMRI). It can be hard to make sense of all these different methods, which share similar features and result in similar outputs. Furthermore, these methods are not…
Jerry Jacob, Nitish Patel, Sucheta Sehgal
Computational models of the cell can be used to study the impact of drugs and assess pathological risks. Typically, computational models are computationally demanding or difficult to implement in dedicated hardware for real-time emulation. A new Frequency Modulation (FM) model is proposed to address these limitations.…