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Distributed Decode and Forward Beamforming
37th Annual IEEE Conference on Local Computer Networks, 2012Distributed transmit beamforming is a wireless communication technique in which multiple independent antennas transmit a common message while controlling their transmitted carrier phases to constructively interfere the message at a destination. Depending on the transmission goals and choice of network parameters, certain noteworthy benefits arise from ...
Chris Walsh +2 more
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Cooperative Fading Regions for Decode and Forward Relaying
IEEE Transactions on Information Theory, 2008Cooperative 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
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Adaptive Virtual Relaying MIMO Decode and Forward
2009 International Conference on Wireless Communications & Signal Processing, 2009Multi-antenna wireless communication systems exploit channel diversity otherwise not available in Single Input Single Output (SISO) channels. Implementation of wireless Multiple-Input Multiple-Output (MIMO) systems is problematic due to the large sized operational wavelengths over the small dimensionality of the mobile devices.
Triant Kanakis +2 more
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A New Incomplete Decode-and-Forward Protocol
2008 IEEE Wireless Communications and Networking Conference, 2008In 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 +2 more
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Decode-and-forward strategies for bidirectional relaying
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008We 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 +2 more
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Error bounds for decode-and-forward relaying
2010 European Wireless Conference (EW), 2010We analyze and compare the maximum-likelihood (ML) decoder and the maximum a-posteriori (MAP) decoder for coding over a decode-and-forward relay network with orthogonal channels. Using a specific model for the errors introduced by the relay, we derive an optimal MAP decoder that operates on a super-trellis and estimates jointly the transmitted codeword
Alexandre Graell i Amat +2 more
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Soft Decode and Forward Improves Cooperative Communications
1st IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, 2005., 2006Mobile receivers can benefit from an increased spatial diversity through cooperation. Two relaying techniques are typically used: either amplify and forward (AF) or decode and forward (DF). This contribution presents a new technique, which combines the main advantages of both AF and DF.
H.H. Sneessens, L. Vandendorpe
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Bounding of MAP decode and forward relaying
2010 IEEE International Symposium on Information Theory, 2010We 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 +2 more
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