OFDM synchronizer implementation for an IEEE 802.11(a) compliant modem [PDF]
, 2002 In OFDM transmissions, synchronization arises to be one of the most critical operations. The reason for that is the preservation of orthogonality: timing offsets and frequency offsets destroy easily this orthogonality, leading to Inter-Symbol ...
Troya, Alfonso +4 more
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Joint Decision-Directed Channel and Noise-Variance Estimation for MIMO OFDM/SDMA Systems Based on Expectation-Conditional Maximization [PDF]
, 2011 A joint channel impulse response (CIR) and noise-variance estimation scheme is proposed for multiuser multiple-input–multiple-output (MIMO) orthogonal frequency-division multiplexing/space-division multiple access (OFDM/SDMA) systems, which is based on ...
Xiaomin Mu +5 more
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Performance Analysis of OFDM under AWGN and Rayleigh Fading Channels Based on Software Defined Radio
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems)Orthogonal Frequency Division Multiplexing (OFDM) is a very efficient and popular modulation technique in modern wireless communication systems. OFDM offers advantages in terms of spectrum efficiency, resistance to multi-path interference, and is able to
Ivana Arum Dimarsasi +2 more
doaj +1 more source
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
doaj +1 more source
Multi-User OFDM Employing Parallel Interference Cancellation Assisted Decision-Directed Channel Estimation [PDF]
, 2002 Multiple reception antenna assisted Space Division Multiple Access (SDMA) techniques designed for wireless Orthogonal Frequency Division Multiplexing (OFDM) systems have recently drawn wide interests.
Münster, M., Hanzo, L.
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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
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Evaluating the physical layer performance of an OFDM candidate for fourth generation networks [PDF]
, 2002 In this paper, work performed under the framework of the IST SATURN project for wide area cellular OFDM is presented in the context of 4G networks.
Nix, AR +3 more
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Joint Channel, Carrier-Frequency-Offset and Noise-Variance Estimation for OFDM Systems Based on Expectation Maximization [PDF]
, 2010 In this paper, a joint channel, carrier-frequency-offset (CFO) and noise-variance estimation scheme is proposed for OFDM systems which is based on Expectation and Maximization (EM) algorithm.
Xiaomin Mu +5 more
core +1 more source
Active and passive sensors for diagnostics quasi-zenith ionospheric HF communication channels
Физика волновых процессов и радиотехнические системыBackground. There is a growing need for active sensory diagnostics of partial HF channels to provide frequency support to quasi-zenith HF radio links in varying signal propagation conditions.
Dmitry V. Ivanov +3 more
doaj +1 more source
OFDM for optical communications [PDF]
, 2010 The first book on optical OFDM by the leading pioneers in the field The only book to cover error correction codes for optical OFDM Gives applications of OFDM to free-space communications, optical access networks, and metro and log haul transports show ...
Shieh, William +3 more
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