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We present a novel approach to heterogeneous networks study based on the implementation of a modular, extensible, and scalable testbed that uses virtualized network emulators. Our goal is to reproduce complex networks scenarios by interconnecting several emulators, concurrently running within a single hardware platform. This paper analyzes the testbed performance with simple emulation trials, to verify...
We present an analytical model to evaluate the performance of the IEEE 802.11 Distributed Coordination Function (DCF) with and without the RTS/CTS handshake in radio-over-fiber (RoF) wireless LANs. The model captures the effects of contending nodes as well as hidden terminals under non-saturated traffic conditions assuming large buffer sizes. The effect of fiber propagation delay is considered. The...
Next generation wireless local area networks, like the upcoming IEEE 802.11ac, strive for large frequency band-widths to cope with the rising traffic demands. Bandwidths of 80 MHz or even 160 MHz are being considered, where a significant frequency diversity among OFDM subcarriers is likely to exist. With a potentially large number of highly attenuated subcarriers it is not clear if the system should...
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