Results 201 to 210 of about 84,552 (262)

On the number of relays for orthogonalize-and-forward relaying

2011 International Conference on Wireless Communications and Signal Processing (WCSP), 2011
Relaying can significantly improve spectral efficiency and extend coverage of two-hop wireless communications between two end nodes. To support the relaying transmission between multiple end nodes, technologies like orthogonalize-and-forward (OF) Relaying are proposed, which can also achieve interference-free communications between end nodes.
Yue Yang, Xudong Wang 0001, Xiaodong Cai
openaire   +1 more source

Optimal relaying strategy for UE relays

The 17th Asia Pacific Conference on Communications, 2011
In cooperative cellular wireless networks, a user equipment (UE) relay can be a good alternative to rendering an end user by forwarding the signal overheard from the source to the end user. However, due to its practical limitation, it has no cell-specific reference signal.
Jingyu Kim   +2 more
openaire   +1 more source

Secrecy transmission with a helper: To relay or not to relay

2014 IEEE International Conference on Communications Workshops (ICC), 2014
In this paper, we consider secure communications between a source and a destination helped by a relay, in the presence of an eavesdropper. We consider both path-loss and fading in our channel models. We investigate such a question that whether the relay operates as a tradition relay or a jammer.
Hao Deng 0001   +3 more
openaire   +1 more source

Relaying strategies for the interference relay channel

2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2012
In this paper, the two-user interference relay channel (IRC) is studied. Transmission schemes for this network are compared. Namely, compress-and-forward (CF) and functional decode-and-forward (FDF) are presented. In CF, the relay establishes cooperation with the users by compressing its observation and forwarding it to the receivers. In FDF, the relay
Anas Chaaban, Aydin Sezgin
openaire   +1 more source

A "Relay Node Division Duplex" Relaying Approach for MIMO Relay Networks

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006
Recent advances in information theory have shown that the use of multiple nodes to simultaneously relay messages can further improve the capacity of source-to-destination communication. This has spurred interest in relay networks as a promising coverage extension technique. Many papers have explored the half duplex approach.
Hui Shi, Takahiro Asai, Hitoshi Yoshino
openaire   +1 more source

Cognitive Relay

Future Generation Communication and Networking (FGCN 2007), 2007
The model of cognitive relay channel is defined and analyzed. Under the constraint of protecting the primary user's transmitting rate and with the relaying strategy being decode forward with parallel codes, the capacity of cognitive relay channel is computed.
Xiaomao Mao, Peiliang Qiu
openaire   +1 more source

Instantaneous Overcurrent Relays for Distance Relaying

Transactions of the American Institute of Electrical Engineers, 1935
Instantaneous isolation of faults on transmission and distribution lines is ever a problem of the relay engineer. The use of instantaneous overcurrent relays as applied to the system of the Oklahoma Gas and Electric Company is discussed in this paper. Relays of this type were applied in conjunction with already installed overcurrent time delay relays ...
openaire   +1 more source

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