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— We consider a relay that simultaneously assists multiple source-destination pairs that do not have a direct link, the so-called gateway channel, and explore the sum capacity of this network in the presence of quasi-static fading. In the absence of transmitter-side channel state information (CSI), we study superpostion as well as orthogonal channel access.(More)
The increased demand on data and the scarcity of available bandwidth motivate research for new technologies beyond 4G. In this paper we provide a system level study of a new cellular architecture that incorporates millimeter wave technology (60 GHz) for the access link. A system level simulation is carried out for a university campus and an urban(More)
—Relay selection, a simple and efficient method of operating multi-relay networks, has in the past been considered only when all relays follow the same protocol. This work studies relay selection in heterogeneous relay networks where relays with different protocols can co-exist. The new techniques for the analysis of such networks are demonstrated on a(More)
— In this paper we study opportunistic communication in two relay channels, the shared relay channel (SRC) and the X-relay channel (XRC). The shared relay channel consists of multiple non-interfering source-destination pairs sharing one relay. The X relay channel is a multi-source multi-destination network where each source has a message for each(More)
— In this paper we study the effect of human blockage on a new cellular architecture that incorporates millimeter wave technology for the access link. Assumptions, methodology, and simulation results are discussed to analyze the effect of human blockage on this type of deployment. A statistical model for human blockage and self blockage of the millimeter(More)
The performance of many opportunistic relay networks has been unknown in part because opportunistic analysis relies on independence assumptions that break down in many interesting and useful network topologies. This paper develops techniques that expand opportunistic analysis to a broader class of networks, proposes new opportunistic methods for several(More)
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