Results 31 to 40 of about 103,505 (332)
ARQ Protocols in Cognitive Decode-and-Forward Relay Networks: Opportunities Gain [PDF]
, 2015 In this paper, two novel automatic-repeat-request (ARQ) based protocols were proposed, which exploit coop- eration opportunity inherent in secondary retransmission to create access opportunities.
Jinlong Wang, Qihui Wu, Zongsheng Zhang
core +2 more sources
A Quantum Multiparty Packing Lemma and the Relay Channel [PDF]
, 2020 Optimally encoding classical information in a quantum system is one of the oldest and most fundamental challenges of quantum information theory. Holevo's bound places a hard upper limit on such encodings, while the Holevo-Schumacher-Westmoreland (HSW ...
Ding, Dawei +3 more
core +2 more sources
Power Efficient Decode-and-Forward Cooperative Relaying [PDF]
IEEE Wireless Communications Letters, 2012 Cooperative communications have been proven to be effective in enhancing performance of wireless networks. In this letter, we introduce and propose adaptive relay-selection rules to offer a tradeoff between fairness and energy consumption at each node for a network with multiple, mutually cooperative nodes.
Zhengguo Sheng +2 more
openaire +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
Robust Transceiver Design for IRS-Assisted Cascaded MIMO Communication Systems
Sensors, 2022 Intelligent reconfigurable surfaces (IRSs) have gained much attention due to their passive behavior that can be a successor to relays in many applications. However, traditional relay systems might still be a perfect choice when reliability and throughput
Hossein Esmaeili +2 more
doaj +1 more source
Multipair Two-Way DF Relaying With Cell-Free Massive MIMO
IEEE 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
Transmit Signal and Bandwidth Optimization in Multiple-Antenna Relay Channels [PDF]
, 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
NOMA-Based User Cooperation With Incremental Hybrid Forwarding Protocols
IEEE 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
Optimal Routing for the Gaussian Multiple-Relay Channel with Decode-and-Forward [PDF]
, 2007 In this paper, we study a routing problem on the Gaussian multiple relay channel, in which nodes employ a decode-and-forward coding strategy. We are interested in routes for the information flow through the relays that achieve the highest DF rate.
Motani, Mehul, Ong, Lawrence
core +2 more sources
Distribute algorithm for two-hops Device-to-Device communications underlaying cellular networks
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