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2011

Space-Time Network Coding

10 years 6 months ago
Space-Time Network Coding
Abstract—In multinode cooperative communications, simultaneous transmissions from two or more nodes are challenging due to its asynchronous nature. In addition, channel estimation is a costly task due to the amount of training, especially when the number of cooperative users is large. Considering all these practical challenges in multinode cooperative communications, this paper propose a new transmission scheme, namely differential space-time network coding (DSTNC), to overcome the problems of imperfect synchronization and complicated channel estimation. Each user in the network linearly combines the correctly decoded symbols by a network coding vector, which is designed to achieve full diversity without introducing large time delay. The pairwise error probability (PEP) is analyzed and the design criteria of the DSTNC are derived based on the PEP. The proposed DSTNC scheme can be applied to any number of cooperative users. Simulation results are shown to verify the performance of the...
Hung-Quoc Lai, K. J. Ray Liu
Added 15 May 2011
Updated 15 May 2011
Type Journal
Year 2011
Where TSP
Authors Hung-Quoc Lai, K. J. Ray Liu
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