Calibration of a UWB Sub-Band Channel Model Using Simulated Annealing

• Published in: IEEE transactions on antennas and propagation Vol. 57; no. 10; pp. 3439 - 3443
• Main Authors: Jemai, J., Eggers, P.C.F., Pedersen, G.F., Kurner, T.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna measurements; Antennas; Applied sciences; Area measurement; Calibration; Channel impulse response (CIR); Channels; Delay; Delay effects; Dielectric loss measurement; Dielectric measurements; Exact sciences and technology; Indoor; Line of sight; Loss measurement; material parameters; Materials testing; Mathematical models; Operation, maintenance, reliability; Radiocommunications; Simulated annealing; Studies; sub-band divided ray tracing; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Time measurement; Transmission and modulation (techniques and equipments); UWB; Performance evaluation; Line of sight propagation; Parameter estimation; Networking; Carrier to noise ratio; Data transmission; material parameters; Accuracy; Indoor installation; Pulse response; Channel estimation; Simulated annealing; Ray tracing; Delay time; Localization; Channel impulse response (CIR); Antenna; UWB; Dielectric materials; sub-band divided ray tracing; Non line of sight propagation; Calibration; Ultra wide band; Deterministic model; Transmission loss
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2009.2028676

This communication presents a calibration method of an indoor UWB sub-band deterministic channel model by means of simulated annealing. Based on the characterization of the channel at sub-bands with a subset of measurement locations, the calibration optimizes the dielectric material parameters of the environment, which improves the accuracy of the model in terms of path loss (L) and time dispersion parameters (root mean square delay spread sigma tau and maximum excess delay tau max ) at all test locations within the test area. The performance of the calibration has been assessed by two indoor measurement campaigns, including line of sight (LOS) office and corridor and non line of sight (NLOS) corridor-office at the Antenna, Propagation and Networking Section building at Aalborg University and at the building of the Institut fur Nachrichtentechnik at Braunschweig Technical University. A reasonable performance of the calibration is noticed in improving the model accuracy within the building, requiring a few pilot measurements.