21   Artículos

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en línea
Bo Tang, Kaiyu Qin, Changwei Chen and Yong Cao    
Orthogonal frequency division multiplexing (OFDM) is a widely used technology for wireless broadband communications. However, it also suffers from some drawbacks. One of the critical limitations is the problem of high peak-to-average power ratio (PAPR), ... ver más
Revista: Information    Formato: Electrónico

 
en línea
Xuefei Ma, Waleed Raza, Zhiqiang Wu, Muhammad Bilal, Ziqi Zhou and Amir Ali    
Machine learning and deep learning algorithms have proved to be a powerful tool for developing data-driven signal processing algorithms for challenging engineering problems. This paper studies the modern machine learning algorithm for modeling nonlinear ... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Yiyao Xu, Yang Zhong and Zhiping Huang    
The blind recognition of the frame parameter plays a crucial role in frame synchronization in the background of a non-cooperation communication system. This paper proposes an algorithm based on self-correlation on the foundation of existed cumulative fil... ver más
Revista: Information    Formato: Electrónico

 
en línea
Omar Daoud,Qadri Hamarsheh,Wael Al-Sawalmeh     Pág. pp. 4 - 8
This work proposes a new algorithm to enhance the performance of the speaker verification over the communication systems based Multiple-Input Multiple-Output (MIMO) - Orthogonal Frequency Division Multiplexing (OFDM) techniques. The algorithm mainly tac... ver más

 
en línea
Brahim Bakkas, Reda Benkhouya, Idriss Chana and Hussain Ben-Azza    
Orthogonal frequency division multiplexing (OFDM) is the key technology used in high-speed communication systems. One of the major drawbacks of OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitted signal. The transmitted signal ... ver más
Revista: Information    Formato: Electrónico

 
en línea
Saruti Gupta,Ashish Goel     Pág. 224 - 231
Partial transmit sequence (PTS) is a well-known PAPR reduction scheme for the OFDM system. One of the major challenge of this scheme is to find an optimal phase vector using exhaustive search over all the allowed phase factor combinations.... ver más
Revista: Journal of Communications Software and Systems    Formato: Electrónico

 
en línea
Yujie Xia and Jinwei Ji    
Orthogonal frequency-division multiplexing (OFDM) is an attractive multicarrier technique for the simplicity of equalization and high data throughput. However, the transmitted OFDM signal has a very high peak-to-average power ratio (PAPR), which severely... ver más
Revista: Information    Formato: Electrónico

 
en línea
Yujie Xia and Jinwei Ji    
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Revista: Information    Formato: Electrónico

 
en línea
Mohammed Y. Bendimerad,Fatima Debbat,Fethi T. Bendimerad     Pág. 180 - 186
Non-contiguous orthogonal frequency division multiplexing (NC-OFDM) is a promising framework for wireless communication systems due to OFDM characteristics like the spectral bandwidth efficiency, robustness to frequency selective fading channels, etc. Ho... ver más
Revista: Journal of Communications Software and Systems    Formato: Electrónico

 
en línea
Omar Daoud,Qadri Hamarsheh,Saleh Saraireh     Pág. pp. 14 - 19
This work proposes a solution to overcome the effect for one of the main drawbacks of these days? wireless systems, where Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) combinations has been used. High peak-to-ave... ver más

 
en línea
Ibrar Ullah, Irshad Hussain, Peerapong Uthansakul, M. Riaz, M. Naeem Khan and Jaime Lloret    
Due to the rapid increase in human population, the use of energy in daily life is increasing day by day. One solution is to increase the power generation in the same ratio as the human population increase. However, that is usually not possible practicall... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Ahmad Abdo, Xueyang Li, Md Samiul Alam, Mahdi Parvizi, Naim Ben-Hamida, Claude D?Amours and David Plant    
Pre-emphasis filters are used to pre-compensate for the transmitter frequency response of coherent systems to mitigate receiver noise enhancement. This is particularly essential for low-cost, low-power coherent transceivers due to having an extremely ban... ver más
Revista: Future Internet    Formato: Electrónico

 
en línea
Omar Daoud,Omar Alani     Pág. pp. 12 - 17
In this paper, a predistortion neural network (PDNN) architecture has been imposed to the Sniffer Mobile Robot (SNFRbot) that is based on spatial multiplexed wireless Orthogonal Frequency Division Multiplexing (OFDM) transmission technology. This proposa... ver más

 
en línea
Bilal Naji Alhasnawi, Basil H. Jasim, Ali M. Jasim, Vladimír Bure?, Arshad Naji Alhasnawi, Raad Z. Homod, Majid Razaq Mohamed Alsemawai, Rabeh Abbassi and Bishoy E. Sedhom    
The electrical demand and generation in power systems is currently the biggest source of uncertainty for an electricity provider. For a dependable and financially advantageous electricity system, demand response (DR) success as a result of household appl... ver más
Revista: Information    Formato: Electrónico

 
en línea
Imran A. Tasadduq, Mohsin Murad and Pablo Otero    
We propose and evaluate the performance of a continuous phase modulation based orthogonal frequency division multiplexing (CPM-OFDM) transceiver for underwater acoustic communication (UAC). In the proposed technique, the mapper in traditional OFDM is rep... ver más
Revista: Journal of Marine Science and Engineering    Formato: Electrónico

 
en línea
Funmilayo B. Offiong, Sinan Sinanovic and Wasiu O. Popoola    
Efficient frame synchronization is essential for data recovery in communication systems. In this study, a single pilot sequence is used to achieve both frame synchronization and peak-to-average power ratio (PAPR) reduction. The two systems considered are... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Wang Cheng, Cao Yushi and Wang Weidong    
In recent years, the constant-envelope orthogonal frequency-division multiplexing (CE-OFDM) has been considered as a candidate waveform in broadband satellite systems as it has a 0-dB peak-to-average power ratio (PAPR). However, the carrier frequency off... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Elias Giacoumidis, Yi Lin, Jinlong Wei, Ivan Aldaya, Athanasios Tsokanos and Liam P. Barry    
Coherent optical orthogonal frequency division multiplexing (CO-OFDM) has attracted a lot of interest in optical fiber communications due to its simplified digital signal processing (DSP) units, high spectral-efficiency, flexibility, and tolerance to lin... ver más
Revista: Future Internet    Formato: Electrónico

 
en línea
Han Wang    
The filter bank multicarrier employing offset quadrature amplitude modulation (FBMC/OQAM) is a candidate transmission scheme for 5G wireless communication systems. However, it has a high peak-to-average power ratio (PAPR). Due to the nature of overlapped... ver más
Revista: Information    Formato: Electrónico

 
en línea
Taketo Eguchi and Masahiro Tasumi    
This study investigated two popular satellite-derived vegetation indices (VIs), MODIS NDVI and EVI, as tools for monitoring crop growth at the Thapanzeik Dam irrigation district in Myanmar, where quality ground data are difficult to obtain. The time-seri... ver más
Revista: Agriculture    Formato: Electrónico

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