Results 11 to 20 of about 50,659 (251)
Interleaved orthogonal frequency division multiplexing system [PDF]
IEEE International Conference on Acoustics Speech and Signal Processing, 2002 A new orthogonal frequency division multiplexing (OFDM) system for wireless communications over frequency selective fading channels is presented. The proposed interleaved orthogonal frequency division multiplexing (IOFDM) system promises higher code rate as compared to the conventional OFDM system without bandwidth expansion and with very slight ...
Prasad, VGS, Hari, KVS
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Analysis of GFDM as a robust 5G communication technique in noisy environment [PDF]
, 2020 One of the challenges of modulation techniques used in Fifth-Generation (5G) is their robustness in noisy environment. Conventional Orthogonal Frequency Division Multiplexing (OFDM) cannot be considered as a 5G waveform in its original form because of ...
Ayaz, Ferheen, Ayaz, Saqib
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Spectrum-Efficient Triple-Layer Hybrid Optical OFDM for IM/DD-Based Optical Wireless Communications [PDF]
, 2020 In this paper, a triple-layer hybrid optical orthogonal frequency division multiplexing (THO-OFDM) for intensity modulation with direct detection (IM/DD) systems with a high spectral efficiency is proposed.
Ghassemlooy, Zabih +5 more
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International Journal of Distributed Sensor Networks, 2020 In this article, three novel systems for wireless sensor networks based on Alamouti decoding were investigated and then compared, which are Alamouti space–time block coding multiple-input single-output/multiple-input multiple-output multicarrier ...
Ahmad AA Solyman +3 more
doaj +1 more source
IEEE Access, 2022 In the scenario of underwater acoustic communication, Orthogonal Frequency Division Multiplexing (OFDM) is widely used for its high spectral efficiency and high transmission rate.
Bai Yiqi, He Chuanlin
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Energy-efficiency improvements for optical access [PDF]
, 2014 This article discusses novel approaches to improve energy efficiency of different optical access technologies, including time division multiplexing passive optical network (TDM-PON), time and wavelength division multiplexing PON (TWDM-PON), point-to ...
Anthapadmanabhan, P +8 more
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Sensors, 2023 This paper investigates the degradation caused by interference resulting from cyclic prefix violation and symbol timing offset in narrowband power line communication systems. In this sense, it presents a unified formulation from which Hermitian symmetric
Túlio Fernandes Moreira +3 more
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Folded orthogonal frequency division multiplexing
Optics Express, 2016 We propose and demonstrate a new sub-carrier multiplexing scheme, utilizing orthogonal, periodic-sinc-shaped sub-carrier spectra. This 'folded' OFDM allows for multi-carrier bands to be generated with the precise, rectangular frequency definition of Nyquist WDM.
Bill, Corcoran +3 more
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Orthogonal frequency division multiplexing with index modulation
2012 IEEE Global Communications Conference (GLOBECOM), 2012 In this paper, a novel orthogonal frequency division multiplexing (OFDM) scheme, called OFDM with index modulation (OFDM-IM), is proposed for operation over frequency-selective and rapidly time-varying fading channels. In this scheme, the information is conveyed not only by M-ary signal constellations as in classical OFDM, but also by the indices of ...
Basar,E. +4 more
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A comparison of MIMO-OFDM and MIMO-SCFDE in WLAN environments [PDF]
, 2003 Recent developments in orthogonal frequency division multiplexing (OFDM) and single-carrier frequency-domain equalization (SCFDE) have sparked debate about the superiority of one method over the other.
Armour, SMD +5 more
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