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This paper considers the $K$-user multiple-input–single-output (MISO) broadcast channel with delayed channel state information at the transmitter (CSIT) where the base station has only two antennas. Based on the MAT <xref ref-type="fn" rid="fn1"/> Named after M. A. Maddah-Ali and D. Tse <xref ref-type="bibr" rid="ref1">[1]</xref>.
Two-tier heterogeneous wireless networks are considered in this paper where nodes in the first tier are distributed as a Poisson Point Process (PPP). Nodes in the second tier are distributed as a Poisson Clustered Process (PCP). Nodes in the second tier have imperfect channel state information (CSI) of the first tier node whose Voronoi cell they are in. On one hand, cross-tier interference is coordinated...
In this paper, we study the degrees of freedom (DoF) of the two-user time-correlated multiple-input-multiple-output (MIMO) interference channel (IC), under realistic assumptions. In particular, the transmitters have imperfect knowledge of the current and the delayed channel state information (CSI). The novelty of this study relies upon the fact that this is the first time, within the literature of...
In this work, we introduce multiple-input-multiple-output (MIMO) interference alignment (IA) in an homogeneous and asynchronous ad hoc network. Perfect channel state information and working status of nodes are conveyed by instantaneous feedback link to one-hop neighbors. Transmitters align their interference to receivers and receivers eliminate interference by zero-forcing method asynchronously. The...
Methods are reviewed for achieving high data rates in bio-implantable devices. Particular attention is given to cortical stimulator arrays for restoring vision. Error-correction codes (ECC) are shown to be essential to obtain reliable operation in next-generation high-rate implants. A survey of reported ECC implementations is presented, and power-vs-performance tradeoffs are revealed after re-scaling...
Interference can be aligned in either vector space (MIMO) or signal scale (lattice). Existing literatures on interference alignment treat these two approaches separately. In this paper, a unified design framework of interference suppression is proposed for interference channel, where both vector alignment and lattice alignment are considered jointly. The framework could adapt the interference alignment...
In this paper, we propose a new interference alignment (IA) scheme designing jointly the linear transmitter and receiver for the MIMO interference channel system, using minimum total mean square error criterion, subject to individual transmit power constraints. We show that transmitter and receiver under such criterion could be realized through a joint iterative algorithm. The convergence of the proposed...
In this paper, we propose a new interference alignment (IA) scheme designing jointly the linear transmitter and receiver for the 2 user MIMO X channel system, using minimum total mean square error criterion, subject to each transmitter power constraint. Considering the channel estimation errors, we further propose a robust design for the IA. Iterative method is used to obtain the optimal solutions...
Communication-induced checkpointing (CIC) protocols can not only bound rollback propagation but also allow each process to take checkpoints independently while at the same time ensure all checkpoints to be useful. In this paper, we present both theoretical and experimental evaluation of protocols in a particular CIC protocol family, called FE family in the literature, and also the FE-Lazy family...
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