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Randomized space-time block coding with limited feedback
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Distributed GABBA space-time codes in amplify-and-forward relay networks
IEEE Transactions on Wireless Communications
Distributed space-time trellis codes for a cooperative system
IEEE Transactions on Wireless Communications
Link-adaptive cooperative communications without channel state information
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BER-Constrained Incremental Relaying with Relay Selection in Cooperative Wireless Networks
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User cooperation can provide spatial transmit diversity gains, enhance coverage and potentially increase capacity. Existing works have focused on two-user cooperative systems with perfect channel state information at the receivers. In this paper, we develop several distributed space-time processing schemes for general N-user cooperative systems, which do not require channel state information at either relays or destination. We prove that full spatial diversity gain can be achieved in such systems. Simulations demonstrate that these cooperative schemes achieve significant performance gain