Results 31 to 40 of about 21,201 (282)

Multipair Two-Way DF Relaying With Cell-Free Massive MIMO

open access: yesIEEE Open Journal of the Communications Society, 2021
We consider a two-way half-duplex decode-and-forward (DF) relaying system with multiple pairs of single-antenna users assisted by a cell-free (CF) massive multiple-input multiple-output (mMIMO) architecture with multiple-antenna access points (APs ...
Anastasios K. Papazafeiropoulos   +3 more
doaj   +1 more source

Energy efficiency of some non-cooperative, cooperative and hybrid communication schemes in multi-relay WSNs [PDF]

open access: yes, 2013
In this paper we analyze the energy efficiency of single-hop, multi-hop, cooperative selective decode-and-forward, cooperative incremental decode-and-forward, and even the combination of cooperative and non-cooperative schemes, in wireless sensor ...
Brante, Glauber   +4 more
core   +1 more source

NOMA-Based User Cooperation With Incremental Hybrid Forwarding Protocols

open access: yesIEEE Open Journal of the Communications Society, 2021
In this paper, we investigate the performance of a non-orthogonal multiple access (NOMA) wireless system, in which signal transmission of a far user is assisted by a near user.
Suyue Li   +5 more
doaj   +1 more source

Cascade decode-and-forward: spatial diversity reuse in sensor networks [PDF]

open access: yesInternational Journal of Sensor Networks, 2016
In this paper, we consider a wireless sensor network that involves sensory data hoping through multiple wireless relays to reach a central collection hub. In particular we improve the decode-and-forward cooperative relaying scheme. In this paper, we propose the Cascade-Decode-and-Forward, where the number of successful relays increases with each ...
Wang, Siyi, Guo, Weisi, Jafari, Amir
openaire   +2 more sources

Incremental selective decode-and-forward relaying for power line communication

open access: yes, 2017
In this paper, an incremental selective decode-and-forward (ISDF) relay strategy is proposed for power line communication (PLC) systems to improve the spectral efficiency.
Dobre, O. A.   +4 more
core   +1 more source

Transmit Signal and Bandwidth Optimization in Multiple-Antenna Relay Channels [PDF]

open access: yes, 2010
Transmit signal and bandwidth optimization is considered in multiple-antenna relay channels. Assuming all terminals have channel state information, the cut-set capacity upper bound and decode-and-forward rate under full-duplex relaying are evaluated by ...
Foschini, Gerard J., Ng, Chris T. K.
core   +1 more source

Distribute algorithm for two-hops Device-to-Device communications underlaying cellular networks

open access: yes上海师范大学学报. 自然科学版, 2015
This paper proposed a power control algorithm for multi-hops device to device communication system under the single cellular networks.Different D2D links communicate by the shared band and users in one D2D links transmit message in two-hop Decode-and ...
CHEN Zhaoyu, LUO Hanwen
doaj   +1 more source

Diversity-Multiplexing Tradeoffs in MIMO Relay Channels

open access: yes, 2008
A multi-hop relay channel with multiple antenna terminals in a quasi-static slow fading environment is considered. For both full-duplex and half-duplex relays the fundamental diversity-multiplexing tradeoff (DMT) is analyzed.
Goldsmith, Andrea   +2 more
core   +1 more source

Mobile User Connectivity in Relay-Assisted Visible Light Communications

open access: yesSensors, 2018
In this paper, we investigate relay-assisted visible light communications (VLC) where a mobile user acts as a relay and forwards data from a transmitter to the end mobile user.
Petr Pešek   +5 more
doaj   +1 more source

Optimal Distributed Resource Allocation for Decode-and-Forward Relay Networks [PDF]

open access: yes, 2013
This paper presents a distributed resource allocation algorithm to jointly optimize the power allocation, channel allocation and relay selection for decode-and-forward (DF) relay networks with a large number of sources, relays, and destinations. The well-
Mao, Zhoujia   +5 more
core  

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