Results 21 to 30 of about 148,329 (294)
IEEE Access, 2022 Dual-hop relay communication systems have received extensive research attention due to their property of improving system reliability, spectral and power efficiency.
Daljeet Singh +4 more
doaj +1 more source
Multiple-Symbol Differential Sphere Detection Aided Successive Relaying in the Cooperative DS-CDMA Uplink [PDF]
, 2011 The conventional amplify-and-forward cooperative system is capable of achieving a superior performance with the aid of Multiple-Symbol Differential Sphere Detection (MSDSD), when compared to conventional differential detection (CDD) for transmission over
Li, Li, Hanzo, Lajos, Lajos Hanzo, Li Li
core +1 more source
Sequential slotted amplify-and-forward with partial relay isolation [PDF]
, 2012 In this paper, we propose a novel relay ordering and scheduling strategy for the sequential slotted amplify-and-forward (SAF) protocol and evaluate its performance in terms of diversity-multiplexing trade-off (DMT).
A. D. S. Jayalath +5 more
core +1 more source
PERFORMANCE ANALYSIS OF COOPERATION SCHEMES IN EAVESDROPPER ASSISTED RELAY CHANNEL [PDF]
ICTACT Journal on Communication Technology, 2014 The prominence of the wireless communication has been urging the monotonically increasing demand of security and privacy. In wireless systems, the notion of perfect secrecy of information with respect to illegitimate nodes can be ensured via physical ...
Vaibhav Kumar Gupta, Poonam Jindal
doaj
Simultaneous Wireless Information and Power Transfer for Cooperative Relay Networks With Battery
IEEE Access, 2017 In this paper, we investigate simultaneous wireless information and power transfer in a cooperative communication network consisting of one source, one battery-enabled relay, and one destination node. An amplify-and-forward relaying method is considered,
Sumaila Mahama +2 more
doaj +1 more source
Mobile User Connectivity in Relay-Assisted Visible Light Communications
Sensors, 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
Full Duplex AF and DF Relaying Under Channel Estimation Errors for V2V Communications
IEEE Access, 2018 In this paper, we investigate the outage performance of full-duplex (FD) and half-duplex (HD) vehicle to vehicle (V2V) networks. We consider two vehicular communication scenarios with the assistance of roadside unit (RSU), i.e., RSU-to-vehicle-to-vehicle
Siye Wang, Dandi Wang, Chao Li, Wenbo Xu
doaj +1 more source
Differential transmission for amplify-and-forward Cooperative communications [PDF]
IEEE Signal Processing Letters, 2005 In this letter, we propose a differential amplify-and-forward (AF) transmission scheme for a two-user cooperative communications system. By efficiently combining signals from both direct and relay links, the proposed scheme provides superior performance compared to those of direct transmissions with either differential detection or coherent detection ...
Thanongsak Himsoon +2 more
openaire +2 more sources
UAV Swarms as Amplify-and-Forward MIMO Relays [PDF]
2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2019 Unmanned aerial vehicles provide new opportunities for performance improvements in future wireless communications systems. For example, they can act as relays that extend the range of a communication link and improve the capacity. Unlike conventional relays that are deployed at fixed locations, UAVs can change their positions to optimize the capacity ...
Samer S. Hanna +3 more
openaire +2 more sources
Energy Efficient Joint Power Optimization for Full-Duplex Relaying
IEEE Access, 2019 Full-duplex (FD) relaying is a promising technology for the next generation communication systems. In this paper, we aim to jointly optimize the source and relay transmit powers to maximize the energy efficiency (EE) for both amplify-and-forward (AF) and
Zhenyao He +3 more
doaj +1 more source