Results 11 to 20 of about 134,511 (264)

Joint Resource Optimization for Orthogonal Frequency Division Multiplexing Based Cognitive Amplify and Forward Relaying Networks [PDF]

open access: yesSensors, 2020
This paper investigates two resource allocation problems in cognitive relaying networks where both secondary network and primary network coexist in the same frequency band and adopt orthogonal frequency division multiplexing (OFDM) technology.
Dong Qin, Tianqing Zhou
doaj   +2 more sources

Amplify-and-Forward Cooperative Diversity for Green UWB-Based WBSNs [PDF]

open access: yesThe Scientific World Journal, 2013
This paper proposes a novel green cooperative diversity technique based on suboptimal template-based ultra-wideband (UWB) wireless body sensor networks (WBSNs) using amplify-and-forward (AF) relays.
Heba Shaban, Mohamad Abou El-Nasr
doaj   +2 more sources

A Two-Hop mmWave MIMO NR-Relay Nodes to Enhance the Average System Throughput and BER in Outdoor-to-Indoor Environments

open access: yesSensors, 2021
Millimeter-Wave (mmWave) bands are receiving enormous attention in 5G mobile communications, due to the capability to provide a multi-gigabit transmission rate. In this paper, a two-hop architecture for 5G communications with the capacity to support high
Randy Verdecia-Peña, José I. Alonso
doaj   +1 more source

End-to-End Learning-Based Framework for Amplify-and-Forward Relay Networks

open access: yesIEEE Access, 2021
We study end-to-end learning-based frameworks for amplify-and-forward (AF) relay networks, with and without the channel state information (CSI) knowledge. The designed framework resembles an autoencoder (AE) where all the components of the neural network
Ankit Gupta, Mathini Sellathurai
doaj   +1 more source

Amplify-and-forward in wireless relay networks [PDF]

open access: yes2011 IEEE Information Theory Workshop, 2011
Minor revision: fixed a typo in eqn. reference, changed the formatting.
Samar Agnihotri   +2 more
openaire   +2 more sources

Optimal Amplify-and-Forward Precode and Relay Amplifying Matrices [PDF]

open access: yes2013 IEEE 77th Vehicular Technology Conference (VTC Spring), 2013
A cooperative amplify-and-forward (AF) wireless relay scheme consisting of M sources, N relays, and L destinations all equipped with a single antenna is studied in this paper. The main objective is to design jointly and iteratively the closed-form of minimum mean square error (MMSE)-based source precode and relay amplifying matrices under a jamming ...
Kim, Hyunggi   +5 more
openaire   +2 more sources

Reliable Over-the-Air Computation by Amplify-and-Forward Based Relay

open access: yesIEEE Access, 2021
In typical sensor networks, data collection and processing are separated. A sink collects data from all nodes sequentially, which is very time consuming.
Suhua Tang   +3 more
doaj   +1 more source

Sequential slotted amplify-decode-and-forward [PDF]

open access: yes2013 IEEE Wireless Communications and Networking Conference (WCNC), 2013
In this paper, we propose a novel slotted hybrid cooperative protocol named the sequential slotted amplify-decode-and-forward (SADF) protocol and evaluate its performance in terms of diversity-multiplexing trade-off (DMT). The relays between the source and destination are divided into two different groups and each relay either amplifies or decodes the ...
Yiyong Chin   +2 more
openaire   +2 more sources

Non-linear energy harvesting based power splitting relaying in full-duplex AF and DF relaying networks: system performance analysis [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2020
Wireless power transfer is considered as a novel solution for energy harvesting in wireless communication networks. In this paper, the system performance of the non-linear energy harvesting based power splitting relaying in the full-duplex relaying ...
Tran Tin Phu   +5 more
doaj   +1 more source

Perbandingan Kinerja Non-Orthogonal dan Orthogonal Amplify and Forward pada Two-Way Cooperative WLAN

open access: yesJurnal Nasional Teknik Elektro dan Teknologi Informasi, 2017
Nowadays, the advancement of Wireless Local Area Network (WLAN) technology has developed very rapidly because it is very practical and has effective mobility level. In practice, there is a major problem in wireless communications systems, which is fading.
Kurnia Rizki, Nasaruddin, Ramzi Adriman
doaj   +1 more source

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