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In dynamic channel sounder measurements with a moving receiver and/or moving transmitter, propagation paths' parameters show a time-variant behavior. This paper describes a novel algorithm which is able to both detect individual propagation paths and track how these paths evolve with time. The proposed algorithm is capable of estimating the paths' parameters and outperforms the standard snapshot-based...
Iterative message passing algorithms (iMPAs) which are generalized from the well-known turbo principle can reach a rapid pseudo-noise (PN) sequence acquisition at low computational complexity. However, its performance will degrade at low signal-to-noise ratio (SNR). In this paper, a soft information improvement using multiple samples in one chip is proposed. Meanwhile, to mitigate the timing error...
We develop an optimization technique for a two way asynchronous relay network. A space-time processing based transceiver is proposed for spatial multiplexing in a two-way relay network. The optimization aims to minimize the transmission power at the relays while satisfying the signal to interference-plus-noise ratio (SINR) target for each user. The problem is solved using semidefinite programming.
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