CRAWDAD cu/cu_wart

Dataset of RSS measurements collected at the University of Colorado Wide-Area Radio Testbed.This data was collected by Caleb Phillips at the University of Colorado (CU). It contains RSS measurements (together with GPS data) collected using the CU Wide Area Radio Testbed (CU-WART), which involves seven 802.11 APs with phased array antennas mounted on university buildings.date/time of measurement start: 2010-05-31 collection environment:The datatset was collected from the University of Colorado Wide-Area Radio Testbed (WART) using a mobile node (a Samsung brand ``netbook'') with a pairof diversity antennas that collected data from 6 rooftop WART nodes.network configuration: WART consists of 8 phased array antenna nodes (7 of them operational) mounted to the rooftops of Colorado University and spans an area of 1.8 x 1.4 kilometers. The entire testbed is linked together via wired Ethernet and can be controlled from a single administration point.data collection methodology: The mobile node was configured to transmit and log beacon packets from WART. The mobile node was additionally instrumented with a USB GPS receiver that was used both to keep a log of position and to synchronize the system clock so that the wireless trace was in sync with the GPS position log. During the experiment, the mobile node was attached to an elevated (nonconducting) platform on the front of a bicycle. The bicycle was pedaled around the CU campus on pedestrian paths, streets, and in parking lots.limitation: The commodity radios do exhibit a certain amount of error in RSS measurements. After calibration, we found that any reasonable confidence level can be achieved by taking a practical number of samples.Tracesetscu_wart/2010Traceset of RSS measurements collected at the University of Colorado Wide-Area Radio Testbed in 2010.file: cu_wart.tar.gzdescription: This data was collected by Caleb Phillips for the purpose of path loss modeling work at the University of Colorado (CU) in 2010. It contains RSS measurements (together with GPS data) collected using the CU Wide Area Radio Testbed (CU-WART), which involves seven 802.11 APs with phased array antennas mounted on university buildings.measurement purpose: Network Performance Analysismethodology: This data was collected using a mobile node (a Samsung brand "netbook") with a pair of diversity antennas. In this experiment, the 6 rooftop CU WART nodes were configured to transmit 80 byte "beacon" packets every 0.5 + U(0.0,0.5) seconds, where U(X,Y) is a uniformly distributed random number between X and Y. Beacons are configured to transmit at 1 Mbps, so that possible effects of Doppler spread on higher datarate waveforms are avoided. Similarly, the mobile device was configured to transmit beacons at the same rate. Meanwhile, each rooftop testbed node was configured to its 9 dBi omnidirectional antenna pattern. All nodes, including the mobile node, were configured to log packets using a second monitor mode (promiscuous) wireless interface. The mobile node was additionally instrumented with a USB GPS receiver that was used both to keep a log of position and to synchronize the system clock so that the wireless trace was in sync with the GPS position log. During the experiment, the mobile node was attached to an elevated (nonconducting) platform on the front of a bicycle.cu/cu_wart Traces