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In wireless distributed networks, multisource multirelay cooperative techniques can be used to exploit the spatial and temporal diversity gains to increase the performance or reduce the transmission energy consumption, which is very useful for intelligent transport system (ITS) networks. In this paper, we propose a power allocation method to optimize the hybrid decode–amplify–forward cooperative transmission...
Space-time block codes (STBCs) are known to orthogonalize the multiple-input multiple-out (MIMO) wireless channels. In this paper, we study the capacity of STBCs over Weibull MIMO channels under three adaptive transmission techniques: optimal power and rate adaptation (orpa), optimal rate adaptation with constant transmit power (ora) and channel inversion with fixed rate. In particular, we obtain...
Multiple access and multipath fading present major challenges for UWB in terms of both technological capability and implementation complexity. In this paper, we develop a multipath-free scheme, which provides a simple approach to select samples of received signals. By this scheme, the subsequent multiuser detection (MUD) would escape from the mismatch due to the correlative multipath signal in impulse...
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