Results 11 to 20 of about 76,661 (236)
One-Bit Precoding and Constellation Range Design for Massive MIMO With QAM Signaling [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2018 The use of low-resolution digital-to-analog converters (DACs) for transmit precoding provides crucial energy efficiency advantage for massive multiple-input multiple-output (MIMO) implementation.
Foad Sohrabi, Ya-Feng Liu, Wei Yu
semanticscholar +3 more sources
ESTIMATION OF POTENTIAL PARAMETERS FOR 5G MOBILE NETWORKS RADIOCHANNELS
Information and Telecommunication Sciences, 2023 Background. Deploying of 5G mobile networks opens up wide opportunities for the development of IoT, high-speed access to Internet services, industrial automation, telemedicine and other modern services.
Ігор Березовський +1 more
doaj +1 more source
PERFORMANCE STUDY OF OFDM BASED ON IP-WT [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2008 In this paper, a proposed model based on In-Place Wavelet Transform (IP-WT) was suggested to improve the performance of the Orthogonal Frequency Division Multiplexing (OFDM) under the Additive White Gaussian Noise (AWGN), and flat fading channel.
Salih M. Salih
doaj +1 more source
Optics Express, 2021 We demonstrate a 4,294,967,296-quadrature amplitude modulation (QAM) based Y-00 quantum stream cipher system carrying a 160-Gb/s 16-QAM signal transmitted over 320-km SSMF.
Xi Chen +8 more
semanticscholar +1 more source
Comparison of FFT-Based and DCT-Based Channel Estimation and ECC for OFDM System [PDF]
Engineering and Technology Journal, 2015 Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method for high data rate wireless communications. In this paper, two schemes are proposed.
Awatif Ali Jafaar
doaj +1 more source
Analisis Kinerja Sistem Modulasi Downlink LTE dan 5G pada Kanal AWGN Berbasis MATLAB
Techne, 2023 Pada penelitian ini dilakukan analisis performansi downlink LTE dan 5G dengan menggunakan MATLAB. Penelitian ini bertujuan untuk menganalisis perbandingan kinerja teknik modulasi QPSK, 16-QAM, dan 64-QAM yang digunakan pada downlink LTE dan teknik ...
Amalia Eka Rakhmania +5 more
doaj +1 more source
Low-Complexity Non-uniform Constellation Demapping Algorithm for Broadcasting System [PDF]
International Journal of Electronics and Telecommunications, 2019 This paper presents a novel low-complexity soft demapping algorithm for two-dimensional non-uniform spaced constellations (2D-NUCs) and massive order one-dimensional NUCs (1D-NUCs).
Chen Wang +3 more
doaj +1 more source
Optical and quantum electronics, 2021 In this work, a full-duplex time and wavelength division multiplexing-passive optical network (TWDM-PON) system is analysed. Orthogonal frequency division multiplexing (OFDM) with m-quadrature amplitude modulation (m-QAM) is employed to improve the ...
Meet Kumari, A. Sheetal, Reecha Sharma
semanticscholar +1 more source
Frontiers in Oncology, 2021 BackgroundIn thermal ablation of liver tumors, complete coverage of the tumor volume by the ablation volume with a sufficient ablation margin is the most important factor for treatment success. Evaluation of ablation completeness is commonly performed by
Raluca-Maria Sandu +8 more
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Frontiers in Oncology, 2021 BackgroundThree-dimensional (3D) volumetric ablation margin assessment after thermal ablation of liver tumors using software has been described, but its predictive value on treatment efficacy when accounting for other factors known to correlate ablation ...
Simeon J. S. Ruiter +9 more
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