. Part of the book series (SIGNAL, volume 14) Abstract This chapter introduces and compares different models for multicast rate regions on an abstract level and establishes submodularity as the prime mathematical structure to model the wireless broadcast advantage. It focuses entirely on the structure of multicast rate regions as sets and their representations. Connections of these multicast models to wireless communication models and to information theoretic source and channel models are established in subsequent chapters. We distinguish between cut models and flow models.
Cut models bound the multicast rates of all sources in any subset of nodes directly using real-valued set functions referred to as cut rate functions. They are inspired by the cut-set outer bound. Flow models bound the multicast rates of all sources indirectly through information flows, which represent the flow of the multicast rates of all sources to the terminals. Information flows need to be conserved at all nodes, and outgoing information flows are locally bounded at all nodes. The submodular cut model and the polymatroid broadcast flow model are proposed in this chapter as strict generalizations of the hypergraph flow model to overcome the shortcomings of hypergraphs in representing the wireless broadcast advantage.
Cut Rate Ge Ecg Ekg 10 Lead Wires For Mac
We don’t use a lot of batteries, but whenever we need one, no matter how exotic and hard to find, we know that we can always find it at batteries.com. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get them in front of Issuu’s. GE Healthcare. Instrument Type. Microprocessor augmented automatic electrocardiograph; 10-leadwire, 12-lead. Low cut off frequency. Heart rate, patient ID, clock, battery power indicator, waveforms, lead lables, speed, gain. Records and prints 12-lead resting ECGs with 10 seconds duration as a standard feature.