نتایج جستجو برای: decode and forward relaying

تعداد نتایج: 16837805  

Journal: :CoRR 2011
Erhan Yilmaz Raymond Knopp David Gesbert

In this paper, we study a communication system consisting of three end-nodes, e.g. a single transceiver base station (BS), one transmitting and one receiving user equipments (UEs), and a common two-way relay node (RN) wherein the full-duplex BS transmits to the receiving UE in downlink direction and receives from the transmitting UE in uplink direction with the help of the intermediate full-dup...

Journal: :CoRR 2008
Sang Joon Kim Natasha Devroye Patrick Mitran Vahid Tarokh

In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of a relay. In this paper, we derive achievable rate regions for four new half-duplex protocols and compare these to four existing half-duplex protocols and outer bounds. In time, our protocols consist of either two or three phases. In the two phase protoco...

Journal: :The Journal of the Korean Institute of Information and Communication Engineering 2013

2006
Emanuele Viterbo Yi Hong Alex Grant

In this paper we study the effects of timing errors on distributed space-time codes for collaborative communications. We assume a half duplex, decode and forward scheme, where two relaying nodes are not perfectly synchronized in forwarding. We analyze 1) the impact of this asynchronism on the performance of an Alamouti and a Golden code scheme with different types of detectors, and 2) the sensi...

2010
Mehdi Torbatian Mohamed Oussama Damen

Outage behavior of non-orthogonal selection decode-and-forward (NSDF) relaying protocol over an asynchronous cooperative network is examined when orthogonal frequency division multiplexing (OFDM) is used to combat synchronization error among the transmitting nodes. It is proved that the asynchronous protocol provides diversity gain greater than or equal to the one of the corresponding synchrono...

Journal: :CoRR 2017
Amrita Mukherjee Tamaghna Acharya Muhammad R. A. Khandaker

In this paper, we study a cooperative cognitive radio network (CCRN) where the secondary user-transmitter (SU-Tx) assists bi-directional communication between a pair of primary users (PUs) following the principle of two-way relaying. In return, it gets access to the spectrum of the PUs to enable its own transmission to SU-receiver (SU-Rx). Further, in order to support sustainable operation of t...

Journal: :Trans. Emerging Telecommunications Technologies 2014
Hirley Alves Richard Demo Souza Gustavo Fraidenraich

In this paper, we compare cooperative full-duplex (FD) and incremental cooperative half-duplex (HD) relaying, in terms of outage probability, throughput and energy efficiency. We consider a practical model for the FD relay, where selfinterference between transmitted and received signals is taken into account. The FD transmission is based on the well known block Markov encoding scheme. For the H...

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