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It is well known that opportunistic relaying combats wireless fading and network coding in multicast reduces retransmission times. In this article, a network coded multicast retransmission scheme based on opportunistic relaying (NCMR-OR) is proposed, which combines the two above techniques to further improve the efficiency of wireless multi-hop multicast. The outage probability and transmission bandwidth...
Alamouti scheme provides a diversity gain no more than 2 over time-selective fading channels under the circumstances of 2??1 MIMO. A full-rate space-time code, space-time codes for time-selective fading (STC-TS), is proposed to provide more diversity gain when the channels fade fast. While the transmission lasts 2N (N>1) symbol periods, the diversity gain is almost 2N. What's more, the optimization...
In order to avoid the loss of spectral efficiency (throughput) caused by half-duplex mode and further improve achievable throughput performance of wireless multi-hop network, a relaying technique that utilizes two sets of relays and physical network coding over bi-directional traffic flows is introduced. We term such technique as Bi-directional Successive Relaying based on Physical Network Coding...
We propose a novel successive relaying scheme based on network coding (SRS), which achieves the same spectral efficiency in half-duplex multi-hop relaying channels as point-to- point transmission does. Except for the source and destination nodes, every hop in the multi-hop relaying link, two relay nodes are arranged, a transmitting relay node and a receiving relay node, and continuously switch their...
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