Results 1 to 10 of about 61,598 (216)
Finite Radon Transform as Subcarriers Mapping Technique for OFDM System
Journal of Communications Software and Systems, 2022 Radon Transform (RT) becomes a mathematical basis for solving computerized tomography, and finds application in medical imaging and image processing. Finite groups represent digital images; the Finite Radon Transform (FRAT) is then applied.
Khalid G Samarah
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A New Analytical Model for SIM–OFDM Contradicts the Previously Claimed Features
Journal of Communications Software and Systems, 2022 The Subcarrier Index Modulation OFDM (SIM–OFDM) appeared in 2009 promising a –3 dB transmitted power reduction without affecting the system performance.
Ahmed N. Jabbar +2 more
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Adaptive Modulation for Orthogonal Frequency Division Multiplexing [PDF]
Engineering and Technology Journal, 2012 Orthogonal frequency division multiplexing (OFDM) is one of the promising technologies to improve the spectral efficiency, enhance system capacity and mitigate inter-symbol interference in the wireless communication system.
Maher K. Mahmood, Abbas Salman Hameed
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Bi-LSTM based deep learning method for 5G signal detection and channel estimation
AIMS Electronics and Electrical Engineering, 2021 The advanced neural network methods solve significant signal estimation and channel characterization difficulties in the next-generation 5G wireless communication systems.
D Venkata Ratnam , K Nageswara Rao
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Design and Implementation of MC-CDMA Technique Using FPGA [PDF]
Engineering and Technology Journal, 2013 Multicarrier Code Division Multiple Access (MC-CDMA) is attractive technique for high speed wireless data transmission; it's a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA).
il A. H. Hadi, Layla Hattim Abood
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OFDM for Cognitive Radio Systems: Novel Power Allocation and Bit Loading Algorithms [PDF]
International Journal of Electronics and Telecommunications, 2019 A novel method to improve the performance of the frequency band is cognitive radio that was introduced in 1999. Due to a lot of advantages of the OFDM, adaptive OFDM method, this technique is used in cognitive radio (CR) systems, widely. In adaptive OFDM,
Shirin Razmi, Naser Parhizgar
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Performance Analysis of Compressive Sensing based LS and MMSE Channel Estimation Algorithm
Journal of Communications Software and Systems, 2021 In this paper, we have developed and implemented Minimum Mean Square Channel Estimation with Compressive Sensing (MMSE-CS) algorithm in MIMO-OFDM systems.
Ami Munshi, Srija Unnikrishnan
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ETRI Journal, 2021 Multi‐carrier waveforms have several advantages over single‐carrier waveforms for radar communication. Employing multi‐carrier complementary phase‐coded (MCPC) waveforms in radar applications has recently attracted significant attention.
Channapatna Gopalkrishna Raghavendra +2 more
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IEEE Photonics Journal, 2023 Compared to the direct current (DC) biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) schemes, the asymmetrically clipped DC biased optical OFDM (ADO-OFDM) has demonstrated a better ...
Wei-Wen Hu
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Generalized Regression Neural Network Based Channel Identification and Compensation Using Scattered Pilot [PDF]
Radioengineering, 2021 In the high-speed mobile environment, channel state information (CSI) estimated at the beginning of the packet is quite different at the last part because the actual channel state changes with time.
H. He +4 more
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