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Successive Phase Sharing and Distributed Multiuser Precoding in Multirelay Systems
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DOI：10.1109/LSP.2010.2062505.png)
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In wireless sensor networks, several relay nodes can be used to support multiple transmission links between source and destination nodes simultaneously to achieve higher spectral efficiency. A channel state information sharing scheme among multiple relay nodes is presented in this letter, where only one angle per source-destination pair is sent from one relay node to another. Then, to enhance received signal powers, a distributed multiuser precoding scheme is presented to be used at each relay node with the angles sent by another relay node. Simulation results demonstrate that the proposed distributed precoding scheme enhances the capacity performance with slight overhead.
Keyword:
Cooperative systems
channel state information (CSI)
MIMO systems
relays
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9.6
论文数:
1.1W
被引数:
1.7W
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