Results 11 to 20 of about 995,022 (301)

Single Carrier-Frequency Division Multiple Access Radar: Waveform Design and Analysis

open access: yesIEEE Access, 2020
This paper proposes Single Carrier-FDMA radar, which is not only a solution to the shortcomings of OFDM radars but also offers improved Ambiguity Function and autocorrelation properties.
Rahat Saadia, Noor M. Khan
doaj   +1 more source

Carrier synchronisation in multiband carrierless amplitude and phase modulation for visible light communication‐based IoT systems

open access: yesIET Optoelectronics, 2023
The technical feasibility of developing an Internet of Things multi‐user communication system is evaluated based on a central digital multiband carrierless amplitude and phase transmitter, which broadcasts data on multiple channels for a number of low ...
Luís Rodrigues   +3 more
doaj   +1 more source

Analyses of Space Division Multiple Access (SDMA) Schemes for Global Mobile Satellite Communications (GMSC) [PDF]

open access: yesTransNav, 2020
This paper describes analyzes of the Space Division Multiple Access (SDMA) technique and their hybrids with other Multiple Access Technique (MAT) such as Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), and Code Division ...
Stojce Dimov Ilcev
doaj   +1 more source

Area spectral efficiency of soft-decision space–time–frequency shift-keying-aided slow-frequency-hopping multiple access [PDF]

open access: yes, 2012
Slow-frequency-hopping multiple access (SFHMA) can provide inherent frequency diversity and beneficially randomize the effects of cochannel interference.
Hanzo, Lajos, Ngo, Hoang Anh
core   +1 more source

Implementation of Multiple Access Techniques Applicable for Maritime Satellite Communications [PDF]

open access: yesTransNav, 2013
In this paper are introduced fundamentals, characteristics, advantages and disadvantages of Multiple Access (MA) employed as transmission techniques in the Maritime Mobile Satellite Communications (MMSC) between ships and Coast Earth Station (CES) via ...
Stojce Dimov Ilcev
doaj   +1 more source

Joint radar-communication waveform designs using signals from multiplexed users [PDF]

open access: yes, 2020
Joint radar-communication designs are exploited in applications where radar and communications systems share the same frequency band or when both radar sensing and information communication functions are required in the same system.
Cao, Ning   +3 more
core   +1 more source

Flexible Subcarrier Allocation for Interleaved Frequency Division Multiple Access [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2020
Interleaved Frequency Division Multiple Access (IFDMA) and Orthogonal FDMA (OFDMA) belong to a class of signal modulation and multiple-access techniques in which information of multiple users are multiplexed and carried on subcarriers within a shared spectrum. Compared with OFDMA, IFDMA has lower Peak-to-Average Power Ratio (PAPR). However, IFDMA poses
Yulin Shao, Soung Chang Liew
openaire   +2 more sources

Biorthogonal frequency division multiple access

open access: yesIET Communications, 2017
Orthogonal frequency division multiple access (OFDMA) multicarrier modulation is the key technology in wireless communication. However, OFDMA can just get the best performance under strict carrier frequency synchronisation. Furthermore, the rectangular prototype window used in OFDMA modulation has poor spectral power density.
Guangyu Wang, Kai Shao, Ling Zhuang
openaire   +1 more source

Blind Joint Soft-Detection Assisted Slow Frequency-Hopping Multicarrier DS-CDMA [PDF]

open access: yes, 2000
A novel multiple-access scheme based on slow frequency-hopping multicarrier direct-sequence, code-division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrow-band ...
Hanzo, L., Yang, L-L.
core   +1 more source

LED-Based Photometric Stereo-Imaging Employing Frequency-Division Multiple Access [PDF]

open access: yes2018 IEEE Photonics Conference (IPC), 2018
Among the many techniques developed for 3D imaging, photometric stereo-imaging excels through the simplicity of the hardware required. It can be used stand-alone or in fusion with other 3D imaging techniques for applications such as 3D scanners, face recognition or surveillance applications [1], [2][2], [3][3], [4][4], [5].
Herrnsdorf, Johannes   +6 more
openaire   +2 more sources

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