Results 31 to 40 of about 60,608 (216)
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
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Физика волновых процессов и радиотехнические системы, 2022 This article presents the results of modeling a communication system with OFDM using the methods of scrambling the transmitted signals and masking the transmitted information.
Maxim Yu. Zuev
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OFDM Techniques for MIMO-OFDM System: A Review
Indian Journal of Science and Technology, 2015 MIMO-OFDM technology converts frequency selective MIMO channel into number of parallel flat fading MIMO channel.It fundamentally simplifies the baseband receiver processing by eliminating the need of complex MIMO equalizer. In this paper every one of the strategies that provide increased BER performance for OFDM has been discussed. Linear Constellation
C. Manikandan, E. Divya, P. Neelamegam
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Comparison of CP-OFDM and OFDM/OQAM in Doubly Dispersive Channels [PDF]
Future Generation Communication and Networking (FGCN 2007), 2007 In this paper we compare the performance of cyclic prefix based OFDM (CP-OFDM) system and OFDM/offset QAM (OFDM/OQAM) system in doubly dispersive channels, by investigating the signal reconstruction perfectness, time and frequency dispersion robustness, and sensitivity to frequency offset.
Du, Jinfeng, Signell, Svante
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Performance Evaluation of Dual Tree Complex Wavelet Packet Modulation (Dt-Cwpm) System Over Multipath Rayleigh Fading Channel [PDF]
Engineering and Technology Journal, 2013 The effectiveness of Dual Tree Complex Wavelet Packet Modulation (DT-CWPM) with DQPSK modulation is investigated for communication over flat and frequency selective Rayleigh fading channel. The simulation results show that the performance of the proposed
Hikmat N. Abdullah +2 more
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Information, 2019 Orthogonal frequency division multiplexing (OFDM) has become an indispensable part of waveform generation in wideband digital communication since its first appearance in digital audio broadcasting (DAB) in Europe in 1980s, and it is indeed in use. As has
Somayeh Mohammady +3 more
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Bioelectromagnetics, Volume 46, Issue 5, July 2025.ABSTRACT Radiofrequency (RF) electromagnetic field spot measurements were performed in line‐of‐sight to 56 active 5G macro base stations across 30 publicly accessible locations in the United Kingdom (UK). Four different exposure scenarios were assessed: background (no traffic instigation), streaming videos, downlink speed test, and extrapolation of SS ...
Carolina Calderon +2 more
wiley +1 more source
Reverse polarity optical-OFDM (RPO-OFDM): dimming compatible OFDM for gigabit VLC links
Optics Express, 2013 Visible light communications (VLC) technology permits the exploitation of light-emitting diode (LED) luminaries for simultaneous illumination and broadband wireless communication. Optical orthogonal frequency-division multiplexing (O-OFDM) is a promising modulation technique for VLC systems, in which the real-valued O-OFDM baseband signal is used to ...
Hany Elgala, Thomas D. C. Little
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Transactions on Emerging Telecommunications Technologies, Volume 36, Issue 7, July 2025.We introduce a novel model of an IRS‐assisted MU‐MISO‐OFDMA system. We aim to jointly optimize beamforming vectors, IRS reflection coefficients, and OFDM subcarrier allocation to maximize the overall sum rate. ABSTRACT In this article, we propose a novel resource allocation strategy for multiuser multiple‐input single‐output orthogonal frequency ...
Binh‐Minh Vu, Oh‐Soon Shin
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Joint Estimation of Impairments for OFDM and MIMO OFDM Systems [PDF]
International Journal of Computer Applications, 2011 Orthogonal Frequency Division Multiplexing (OFDM) is a multi–channel modulation technique that makes use of Frequency division multiplexing (FDM) being modulated by a low bit rate digital stream. The main reason of using OFDM is because here the symbol detection is easy and also to increase the robustness against frequency selective fading and narrow ...
T. Shankar +2 more
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