Results 51 to 60 of about 3,119 (218)

Iterative intersymbol interference cancellation in vestigial sideband Nyquist–subcarrier modulation system [PDF]

open access: yes, 2014
This is the published version. © 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)The intersymbol interference caused by dispersion, chirp, and a vestigial sideband filter in intensity modulation and a direct detection single carrier ...
Liu, Na   +3 more
core   +1 more source

QCL‐Based Cryogen‐Free THz Optical Wireless Communication Link

open access: yesLaser &Photonics Reviews, Volume 19, Issue 6, March 18, 2025.
A novel QCL‐based, cryogen‐free, and transportable wireless communication system is presented operating at 2.83 THz. The QCL device is mounted in a compact Stirling refrigerator, while a room‐temperature graphene‐based FET is used as a receiver, implementing a binary on‐off keying (OOK) modulation scheme with Manchester encoding.
Alessia Sorgi   +10 more
wiley   +1 more source

A Design of NLOS Communication Scheme Based on SC-FDE with Cyclic Suffix for UAV Payload Communication

open access: yesDrones
Non-line-of-sight (NLOS) communication with severe loss always leads to performance degradation in unmanned aerial vehicle (UAV) payload communication. In this paper, a UAV NLOS communication scheme based on single-carrier frequency domain equalization ...
Peng Wang   +4 more
doaj   +1 more source

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

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

Enhancing System Capacity Through Joint Space‐Ground Multi‐Beam Coordination for LEO Satellite Systems

open access: yesEngineering Reports, Volume 7, Issue 1, January 2025.
ABSTRACT Due to the long transmission distance of the constellation network represented by the low‐orbit satellite system, the satellite‐to‐ground link is subject to large path loss and limited communication performance. This paper uses multi‐satellite and multi‐beam joint transmission technology to form a virtual multiplex network with ground multi ...
Yuyang Liu, Tong Shi, Hua Wang
wiley   +1 more source

The system of transmission of digital information by using multilevel signals with compact spectrum [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2008
The digital information transmission method is proposed which makes it possible to decrease intersymbol interference and to increase the action efficiency of symbol interval synchronization system by using specific form signal functions set.
Sukachоv E. A., Shkulipa P. A.
doaj  

Detection Strategies for MIMO‐GFDM‐IM System

open access: yesIET Communications, Volume 19, Issue 1, January/December 2025.
Dedicated to studying the multiple‐input multiple‐output generalized frequency division multiplexing with index modulation wireless communication system, this paper highlights its high spectral and energy efficiency, robustness against multipath channels.
José Luis Calpa Juajinoy   +2 more
wiley   +1 more source

A CNN‐BiLSTM–Based Deep Learning Model for CPM Signal Detection

open access: yesElectronics Letters, Volume 61, Issue 1, January/December 2025.
This paper proposes a novel convolutional neural network–bidirectional long short‐term memory (CNN‐BiLSTM) architecture for continuous phase modulation (CPM) signal detection, effectively addressing the challenges of computational complexity and memory inherent in CPM signals.
Yang He, Ning Cao, Can Hu, Hao Lu
wiley   +1 more source

Differential Interference Suppression Aided Three-Stage Concatenated Successive Relaying [PDF]

open access: yes, 2012
Conventional single-relay aided two-phase cooperative networks employing coherent detection algorithms incur a significant 50% throughput loss. Furthermore, it is unrealistic to expect that in addition to the task of relaying, the relay-station would ...
Li, Li, Wang, Li, Hanzo, Lajos
core  

Performance Degradation Due To Specular Multipath Intersymbol Interference

open access: yes, 1973
Plots of performance degradation are used to compare the effects of fading and intersymbol interference in a two-component specular multipath digital communications channel.
Cunningham, David R.   +2 more
core   +1 more source

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