Results 11 to 20 of about 144,701 (287)

Damped Zero-Pseudorandom Noise OFDM Systems [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2018
This paper proposed a new OFDM scheme called damped zero-pseudorandom noise orthogonal frequency division multiplexing (DZPN-OFDM) scheme. In the proposed scheme, ZPN-OFDM non-zero part is damped to reduce its energy, thus the mutual interference power ...
Hamada Esmaiel
doaj   +1 more source

Improved Channel Estimation and Equalization for Single-Carrier IEEE 802.11ad Receivers [PDF]

open access: yesRadioengineering, 2023
IEEE 802.11ad uses mmWave technology for multi-gigabit wireless access networks. Multipath with large delay spread severely reduces performance due to insufficient guard interval.
G. Baruffa, L. Rugini
doaj  

Energy Harvesting for TDS-OFDM in NOMA-Based Underwater Communication Systems

open access: yesSensors, 2022
Non-orthogonal multiple access (NOMA) is considered a promising multiple access technique for fifth generation (5G) mobile networks and tactical internet due to its high spectral efficiency.
Hamada Esmaiel, Haixin Sun
doaj   +1 more source

Investigating the relation between optimum guard interval and channel delay spread for a MC-CDMA system [PDF]

open access: yes, 2012
This paper demonstrates a novel approach to determining the optimum guard interval for a multicarrier code division multiple access (MC-CDMA) system. Analytical expressions for useful and interference power are derived as a basis for comparison.
Gokalp, H, Kurnaz, C
core   +1 more source

Proper interval graphs and the guard problem

open access: yesDiscrete Mathematics, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chiuyuan Chen   +2 more
openaire   +1 more source

Reducing the effects of intersymbol interference in diffuse DPIM optical wireless systems [PDF]

open access: yes, 2003
The paper investigates the performance of digital pulse interval modulation (DPIM) in the presence of multipath propagation and additive white Gaussian noise.
Ghassemlooy, Zabih   +2 more
core   +1 more source

Blind CP-OFDM and ZP-OFDM Parameter Estimation in Frequency Selective Channels

open access: yesEURASIP Journal on Wireless Communications and Networking, 2009
A cognitive radio system needs accurate knowledge of the radio spectrum it operates in. Blind modulation recognition techniques have been proposed to discriminate between single-carrier and multicarrier modulations and to estimate their parameters. Some
Duplicy Jonathan   +3 more
doaj   +2 more sources

Reachability Analysis for Nonlinear Analog/Mixed-Signal Circuits With Trajectory-Based Reachable Sets

open access: yesIEEE Access, 2023
This paper presents an efficient and scalable reachability analysis algorithm for nonlinear analog/mixed-signal circuits. In particular, it addresses the challenges in computing the time evolution of the reachable set of the circuit’s continuous ...
Seyoung Kim, Jaeha Kim
doaj   +1 more source

Future transmitter/receiver diversity schemes in broadcast wireless networks [PDF]

open access: yes, 2006
An open diversity architecture for a cooperating broadcast wireless network is presented that exploits the strengths of the existing digital broadcast standards.
Bard, M, Cosmas, J, Song, Y H, Zhang, Y
core   +1 more source

SLANTLET TRANSFORM-BASED OFDM SCHEME

open access: yesJournal of Engineering, 2006
Wireless digital communication is rapidly expanding resulting in a demand for systems that are reliable and have a high spectral efficiency. To fulfill these demands OFDM technology has drawn a lot of attention.
Sulaiman M. Abbas   +2 more
doaj   +1 more source

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