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Cooperative Communications
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This article reviews progress in cooperative communication networks and intends its presentation to be a tutorial for the reader who is familiar with information theory concepts but has not actively followed the field.Abstract:
This article reviews progress in cooperative communication networks. Our survey is by no means exhaustive. Instead, we assemble a representative sample of recent results to serve as a roadmap for the area. Our emphasis is on wireless networks, but many of the results apply to cooperation in wireline networks and mixed wireless/wireline networks. We intend our presentation to be a tutorial for the reader who is familiar with information theory concepts but has not actively followed the field. For the active researcher, this contribution should serve as a useful digest of significant results. This article is meant to encourage readers to find new ways to apply the ideas of network cooperation and should make the area sufficiently accessible to network designers to contribute to the advancement of networking practice.read more
Citations
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References
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Proceedings ArticleDOI
Parity Forwarding For Multiple-Relay Networks
Peyman Razaghi,Wei Yu +1 more
TL;DR: This paper proposes a relaying strategy for networks with multiple relays where each relay forwards parities of decoded codewords and shows that relay networks can be degraded in more than one way and parity-forwarding is capacity achieving for a new form of degraded relay networks.
Proceedings ArticleDOI
The impact of relaying on the capacity of broadcast channels
TL;DR: The capacity of two broadcast systems with relay links, both of these systems are extensions of two users degraded broadcast channels, which achieves a rate region of channels and includes the capacity region of original broadcast channel.
Journal ArticleDOI
Full-rate distributed space-time codes for cooperative communications
Wei Zhang,Khaled Ben Letaief +1 more
TL;DR: A full-rate distributed space-time (ST) code design is proposed for amplify-and-forward cooperative wireless channels by employing a signal space diversity technique at the source node and a unique signature vector at each relay node to achieve full cooperative diversity and full rate.
Journal ArticleDOI
Spectral Efficiency of Joint Multiple Cell-Site Processors for Randomly Spread DS-CDMA Systems
TL;DR: A chip-interleaved randomly spread direct-sequence code-division multiple-access (DS-CDMA) scheme is considered, employed in two variants of Wyner's infinite linear cell-array model with flat fading, and chip-level interleaving is found beneficial in several cases of interests, and is conjectured to be beneficial in general.
Proceedings ArticleDOI
Minimum energy communication over a relay channel
A. El Gamal,S. Zahedi +1 more
TL;DR: In this paper, upper and lower bounds on the minimum energy-per-bit required for reliable communication over AWGN relay channels were investigated, and the upper bound was shown to be less than 2.