Results 221 to 230 of about 12,636 (259)

A New Incomplete Decode-and-Forward Protocol

2008 IEEE Wireless Communications and Networking Conference, 2008
In this work, we explore the introduction of distributed space-time codes in decode-and-forward (DF) protocols. We propose a new Incomplete DF protocol, based on a partial decoding at the relays. This strategy allows the new protocol to bring both full diversity and full symbol rate.
Charlotte Hucher, Ghaya Rekaya-Ben Othman, Ahmed Saadani   +2 more
openaire   +1 more source

Decode-and-forward strategies for bidirectional relaying

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008
We consider a three-node network, where a relay node establishes a bidirectional communication between two nodes using a two-phase decode-and-forward protocol. In the first phase the two nodes transmit their messages to the relay node which decodes them.
Rafael F. Wyrembelski, Tobias J. Oechtering, Holger Boche   +2 more
openaire   +1 more source

Bounding of MAP decode and forward relaying

2010 IEEE International Symposium on Information Theory, 2010
We formulate the maximum a posteriori (MAP) rule for the decode-and-forward transmission strategy operating with a noisy relay. From the MAP rule we derive an analytical bound on the error probability, taking into account decoding errors at the relay.
Ingmar Land, Alexandre Graell i Amat, Lars K. Rasmussen   +2 more
openaire   +2 more sources

Decode‐and‐forward with full‐duplex relaying

International Journal of Communication Systems, 2011
SUMMARYThis paper addresses the full‐duplex relaying. Some expressions for outage and average capacity of a two‐hop cooperative system with a full‐duplex relay are derived under an independent but not identically distributed Rayleigh fading environment. Using these expressions, we provide the performance analysis without Monte Carlo simulations.
Xianyi Rui, Jia Hou, Liulei Zhou
openaire   +1 more source

Cooperative Fading Regions for Decode and Forward Relaying

IEEE Transactions on Information Theory, 2008
Cooperative transmission protocols over fading channels are based on a number of relaying nodes to form virtual multi-antenna transmissions. Diversity provided by these techniques has been widely analyzed for the Rayleigh fading case. However, short range or fixed wireless communications often experience propagation environments where the fading ...
SAVAZZI, STEFANO, SPAGNOLINI, UMBERTO
openaire   +2 more sources

Opportunistic Decode-and-Forward Relaying with Interferences at Relays

Wireless Personal Communications, 2011
In this paper, a decode-and-forward cooperative interference-limited multiple relay network is considered. An efficient relay selection strategy and its performance analysis are proposed, where only the relay nodes are affected by multiple interferences.
Sung-Il Kim 0001, Saejoon Kim, Joon Tae Kim, Jun Heo 0002   +3 more
openaire   +1 more source

Compressive cooperative communication with decode and forward relay

2016 8th International Conference on Communication Systems and Networks (COMSNETS), 2016
The theory of compressive sensing (CS) is acquiring attraction now a days, as it can reconstruct a sparse signal at a sub-Nyquist sampling rate. Recently CS is being used in communication systems for channel estimation, Massive MIMO, cognitive radio etc. In this paper, CS is using in an overlay cooperative spectrum sharing scheme for decode and forward
Neha Jain 0002, Vivek Ashok Bohara, Anubha Gupta   +2 more
openaire   +1 more source

Adaptive Modulation for Opportunistic Decode-and-Forward Relaying

IEEE Transactions on Wireless Communications, 2011
Orthogonal relay based cooperative communication enjoys distributed spatial diversity gain at the price of spectral efficiency. This work aims at improving the spectral efficiency for orthogonal opportunistic decode-and-forward (DF) relaying through employment of novel adaptive modulation scheme.
Yi Ma 0002, Rahim Tafazolli, Yuanyuan Zhang 0004, Chuyi Qian   +3 more
openaire   +3 more sources

Decode-and-Forward Cooperative Networks with Relay Selection

2007 IEEE 66th Vehicular Technology Conference, 2007
In this paper, we focus on the decode-and-forward (DF) cooperative networks with relay selection. Many detection schemes have been proposed for the DF; but it has been shown that the cooperative maximum ratio combining (C-MRC) can achieve almost the same performance as the optimum maximum likelihood detector and has a much lower complexity.
Zhihang Yi, Il-Min Kim 0001
openaire   +1 more source

Decode-and-forward cooperation as the distributed encoding and decoding

2010 7th International Symposium on Wireless Communication Systems, 2010
The decode-and-forward relaying is studied as two problems of the distributed encoding and decoding. Specifically, in the first problem, the source and the relay employ the same channel encoding, and the objective is to find how to distribute the decoding complexity between the relay and the destination.
Saif E. A. Alnawayseh, Pavel Loskot
openaire   +1 more source