Results 21 to 30 of about 365,213 (282)

Outage probability analysis of vehicular communication system with two-way AF cooperation

open access: yesDianzi Jishu Yingyong, 2018
In vehicular communication system, two-way cooperative communication can improve system performance. However, vehicle mobile communication will cause the two-way link correlation and thus reduce the system outage performance.
Lin Xiaoyu, Qiu Bin, Xiao Hailin
doaj   +1 more source

Energy-efficient power allocation for massive MIMO-enabled multi-way AF relay networks with channel aging

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
In this paper, we consider a massive MIMO-enabled multi-way amplify-and-forward relay network with channel aging, where multiple users mutually exchange information via an intermediate relay equipped with massive antennas.
Fangqing Tan   +3 more
doaj   +1 more source

Target detection based on generalized Bures–Wasserstein distance

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Radar target detection with fewer echo pulses in non-Gaussian clutter background is a challenging problem. In this instance, the conventional detectors using coherent accumulation are not very satisfactory.
Zhizhong Huang, Lin Zheng
doaj   +1 more source

Adaptive Diversity Algorithm Based on Block STBC for Massive MIMO Link Misalignment in UWOC Systems

open access: yesJournal of Marine Science and Engineering, 2023
In the past few years, underwater wireless optical communication (UWOC) has become a promising wireless communication technology in the underwater environment.
Yanlong Li   +5 more
doaj   +1 more source

A Machine Anomalous Sound Detection Method Using the lMS Spectrogram and ES-MobileNetV3 Network

open access: yesApplied Sciences, 2023
Unsupervised anomalous sound detection by machines holds significant importance within the realm of industrial automation. Currently, the task of machine-based anomalous sound detection in complex industrial settings is faced with issues such as the ...
Mei Wang   +7 more
doaj   +1 more source

DDH-MAC: a novel dynamic de-centralized hybrid MAC protocol for cognitive radio networks [PDF]

open access: yes, 2011
The radio spectrum (3kHz - 300GHz) has become saturated and proven to be insufficient to address the proliferation of new wireless applications. Cognitive Radio Technology which is an opportunistic network and is equipped with fully programmable wireless
Maple, Carsten   +2 more
core   +2 more sources

Signal Detection for QPSK Based Cognitive Radio Systems using Support Vector Machines [PDF]

open access: yes, 2015
Cognitive radio based network enables opportunistic dynamic spectrum access by sensing, adopting and utilizing the unused portion of licensed spectrum bands.
Khan, I.   +3 more
core   +2 more sources

Cognitive Radio

open access: yesComputer and Information Science, 2008
The radio frequency spectrum is a scarce natural resource and its efficient use is of the utmost importance. The spectrum bands are usually licensed to certain services, such as mobile, fixed, broadcast, and satellite, to avoid harmful interference between different networks to affect users.
Kevin Curran   +2 more
openaire   +4 more sources

Spectrum sharing and cognitive radio [PDF]

open access: yes, 2009
Spectrum sharing has been the subject of a 3 year research programme organised by the UK's Virtual Centre of Excellence in Mobile and Personal Communications.
Beach, MA   +5 more
core   +2 more sources

Noncooperative equilibrium solutions for spectrum access in distributed cognitive radio networks [PDF]

open access: yes, 2008
This paper considers the problem of channel selection and dynamic spectrum access in distributed cognitive radio networks. The ability of a cognitive radio to adaptively switch between channels offers tremendous scope to optimize performance.
Armour, SMD   +4 more
core   +2 more sources

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