Results 31 to 40 of about 62,657 (220)
, 2007 Orthogonal Frequency Division Multiplexing (OFDM) has been employed in numerous wireless standards. However, the performance of OFDM systems is degraded by both the Carrier Frequency Offset (CFO) and the Phase Estimation Error (PER).
Liu, X., Hanzo, L.
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Advances in Electrical and Computer Engineering, 2017 This article presents and evaluates pipelined architecture designs for an improved high-frequency Fast Fourier Transform (FFT) processor implemented on Field Programmable Gate Arrays (FPGA) for Multiple Input Multiple Output Orthogonal Frequency ...
DALI, M. +4 more
doaj +1 more source
IEEE Wireless Communications Letters, 2018 Orthogonal frequency division multiplexing (OFDM) with index modulation (IM) is a multicarrier transmission technique for frequency-selective fading channels. Although it is energy and spectral efficient, its performance may not be satisfactory as some active subcarriers can be suppressed by fading. In this letter, we consider trellis coded modulation (
Jinho Choi 0001, Youngwook Ko
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Iterative Receiver Architectures for MIMO-OFDM [PDF]
, 2007 In this paper we propose a turbo-detected multiantenna-multi-carrier receiver scheme. Following the philosophy of the turbo processing, our turbo MIMO-OFDM receiver comprises a succession of detection modules, namely the channel estimator, the space-time
Jos Akhtman +3 more
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A Low Complexity Optimal LMMSE Channel Estimator for OFDM System
Journal of Communications Software and Systems, 2021 Linear minimum mean square error (LMMSE) is the optimal channel estimator in the mean square error (MSE) perspective, however, it requires matrix inversion with cubic complexity.
Jyoti P. Patra +2 more
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Enhanced Index Modulated OFDM Spread Spectrum
IEEE Access, 2018 Index modulated OFDM spread spectrum (OFDM-IM-SS) is a recently proposed scheme, which transmits the additional bits (index bits) through the code domain.
Jun Li +4 more
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Wavelet-OFDM vs. OFDM: Performance comparison
2016 23rd International Conference on Telecommunications (ICT), 2016 Wavelet-OFDM based on the discrete wavelet transform, has received a considerable attention in the scientific community, because of certain promising characteristics. In this paper, we compare the performance of Wavelet-OFDM based on Meyer wavelet, and OFDM in terms of peak-to-average power ratio (PAPR), bit error rate (BER) for different channels and ...
Marwa Chafii +2 more
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Journal of Applied Informatics and ComputingThis study presents a simulation-based comparative analysis of Two-Ray Ground Reflection and COST-231 Hata propagation models on Bit Error Rate (BER) performance in point-to-point OFDM wireless systems.
Nurhadi Ramadhan, Endah Setyowati
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, 2022 La tesina tratta soprattutto una tipologia di O-OFDM, il CO-OFDM, che garantisce prestazioni più elevate rispetto ai concorrenti (DDO-OFDM) nella trasmissione su lunghe distanze. Si darà innanzitutto una panoramica su quella che è la modulazione OFDM
Polizzotto, Alessandro
core
A way of decreasing the reliability of new OFDM data link
Dianzi Jishu Yingyong, 2021 A new OFDM data link model based on OCML is proposed to solve the problem of reliability of data link of air-to-ground radar. The above model uses OCML spatiotemporal chaotic sequence to improve CCSK soft spread spectrum, and simulates with coding and ...
Su Yuhang +3 more
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