Results 81 to 90 of about 7,335,937 (187)

Enabling and Enhancing Massive Multiple Input-Multiple Output Systems with Two-Dimensional Orthogonal Pattern Division Multiple Access. [PDF]

Sensors (Basel)
Wang R, Yao J, Shi Y, Liu Z, Bai X.
europepmc   +1 more source

Assessing the Effectiveness of Frequency Manoeuvring in UAV Networks Under Jamming and Interference. [PDF]

Sensors (Basel)
Targowski P, Łeska S, Walczak J, Chmielewski S, Furtak J.   +4 more
europepmc   +1 more source

Domain Adaptation-Based Sorting Method for UAV Swarm Targets on Multi-Station Features. [PDF]

Sensors (Basel)
Zhang X, Zhang M, Sun W, Ji Y, Chen R, Liu T.   +5 more
europepmc   +1 more source

A labeled RF signal dataset for UAV detection and classification in the 2.4GHz band under Wifi and Bluetooth coexistence. [PDF]

Data Brief
Mgannem S, Aloui R, Hamdi B, Mhatli S, Llamas-Garro I.   +4 more
europepmc   +1 more source

Label-Efficient and Lightweight Spectrum Prediction for UAV-Based Spectrum Sensing: A Critical Review. [PDF]

Sensors (Basel)
Xu R, Li C, Su Q, Luo Z, Wang X.
europepmc   +1 more source

Systems with frequency hopping

, 2008
This bachelor´s thesis deals the systems, which use the Frequency Hopping (FH). The brief history of frequency hopping and its development together with Adaptive Frequency Hopping technology (AFH) is introduced.
Jelínek, Martin
core  

Delay-Doppler Domain Time-Hopping Key Generation and Security Analysis for Orthogonal Time Frequency Space Satellite Communication Systems. [PDF]

Sensors (Basel)
Li W, Bai Z, Wang J, Xu X, Zhu X.
europepmc   +1 more source

Demodulation-Oriented Neural Denoising for Long-Sequence I/Q Wireless Signals in Data-Link Receiver Chains. [PDF]

Sensors (Basel)
Li M, Li Y, Feng Q.
europepmc   +1 more source

SPA-DETR: An Enhanced RT-DETR with Spatial-Preserving Attention and Adaptive Loss for UAV Spectrogram Signal Detection. [PDF]

Sensors (Basel)
Fu C, Xu L, Zhang Y.
europepmc   +1 more source

Performance of Hybrid Direct-Sequence Time-Hopping Ultrawide Bandwidth Systems over Nakagami-m Fading Channels

, 2007
This paper investigates and compares the performance of various ultrawide bandwidth (UWB) systems when communicating over Nakagami-m fading channels. Specifically, the direct-sequence (DS), time-hopping (TH) and hybrid direct-sequence time-hopping (DS-TH)
Yang, Lie-Liang, Ahmed, Qasim Zeeshan
core