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This paper proposes an experimental evaluation of the IEEE 802.11ac standard. The evaluation testbed is comprised of two National Instruments Universal Software Radio Peripheral (NI USRP) 2954R Software Defined Radios (SDRs) controlled by the NI-PXIe-8840 Quad-Core embedded computer running the 802.11 Application Framework and Lab VIEW Communications 2.0. Two evaluation scenarios are analyzed: (1)...
Wireless transmission is, broadly speaking, considered unreliable and unstable. For real-time applications, redundancy must be counted as a solution for preventing system unavailability. In this paper a testbed comprised of three National Instruments USRP-RIO platforms (two acting as access points, and one as a client station) was set in order to test the performance of a redundant IEEE 802.11-based...
In this paper we evaluate the adaptive potential of multi-antenna transmission systems employing precoded spacetime block codes. Based on the transmit parameters that are intended to be efficiently use, the most appropriate precoded transmission is evaluated. Several performance criteria were considered: bit error rate, capacity, spectral efficiency and link throughput.
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