System and Method for Determining and Sharing Spectrum Availability

A method and apparatus for determining and sharing RF spectrum availability. The method includes automatically sensing and analyzing a spectrum to identify used and/or unused portions of the spectrum, and automatically communicating the used and/or unused portions of the spectrum to a spectrum owner or a spectrum user. The invention has particular use in automatically identifying and quantifying current spectrum users, automatically reporting the current spectrum users to a spectrum owner, and/or allocating unused spectrum portions to users.Sponsorship: Illinois Institute of TechnologyUnited States Paten

Empirical Modeling of Public Safety to Voice Traffic to Aid Emergency Capacity

An RF measurement system with high time resolution is implemented to determine the statistical characteristics of various channels in the Land Mobile Radio bands. The applicability of simple statistical models to the observed data is investigated, as well as their validity over short and long periods of time. The results show that the statistics of the idle and holding times of communication on these channels vary significantly over time and demonstrate daily periodicity, requiring non-stationary models to accurately represent them. Over short durations of time however, conventional distributions such as the exponential and lognormal may adequately characterize the properties of these quantities, allowing convenient and compact representations of the data. Results based on empirical data are presented to quantify the probability of stationarity for voice traffic within a time span of given length. The findings are useful for network planning or streamlining, network simulation and modeling, and investigation of dynamic spectrum access.Sponsorship: National Science Foundation, Federal Communications Commission, Motorola, Cleversafe, Roberson & Associates LL

Heat Driven Refrigeration System (Semester 2 of Unknown), IPRO 357

The solution will take the form of a novel system based on a refrigeration cycle driven by heat. The cycle will be built around a "pressure exchanger" consisting of a piston, along with solenoid valves controlled by a microprocessor. Heat will most likely be obtained through the combustion of biomass such as plant by-products and animal wastes, but will be flexible enough to allow for more conventional fuel types such as kerosene and coal.Sponsorship: ASHRAE, NCIIADeliverable

Heat Driven Refrigeration System (Semester 2 of Unknown), IPRO 357: Heat Driven Refrigeration System IPRO 357 Abstract F04

The solution will take the form of a novel system based on a refrigeration cycle driven by heat. The cycle will be built around a "pressure exchanger" consisting of a piston, along with solenoid valves controlled by a microprocessor. Heat will most likely be obtained through the combustion of biomass such as plant by-products and animal wastes, but will be flexible enough to allow for more conventional fuel types such as kerosene and coal.Sponsorship: ASHRAE, NCIIADeliverable

Spectrum occupancy measurements in the 2.3-2.4 GHz band:Guidelines for licensed shared access in Finland

This paper presents results from spectrum occupancy measurements in the 2.3-2.4 GHz band at Turku, Finland. The band is currently under study in European regulation and standardization for mobile communication systems. We review the recently introduced Licensed Shared Access (LSA) concept as a potential means for making the 2.3-2.4 GHz band available for mobile communications on a shared basis while protecting the rights of the incumbent spectrum users. The spectrum occupancy measurements conducted in one location in Finland show that the use of this band is rather low indicating that there might be potential for mobile communication systems to share this band with the incumbents under the LSA approach. Based on the obtained knowledge about the use of the studied band in Finland we create a set of guidelines for LSA to make the operation efficient both from the technical and economic viewpoint

Heat Driven Refrigeration System (Semester 2 of Unknown), IPRO 357: Heat Driven Refrigeration System IPRO 357 Final Report F04

The solution will take the form of a novel system based on a refrigeration cycle driven by heat. The cycle will be built around a "pressure exchanger" consisting of a piston, along with solenoid valves controlled by a microprocessor. Heat will most likely be obtained through the combustion of biomass such as plant by-products and animal wastes, but will be flexible enough to allow for more conventional fuel types such as kerosene and coal.Sponsorship: ASHRAE, NCIIADeliverable

Bar-Code and FIFO Systems Implementation at Shure (semester?), IPRO 313: Barcode and FIFO Systems Implementation at SHURE IPRO 313 IPRO Day Presentation F05

The origin of this IPRO comes from the necessity of the company of tracking the items from start to finish. Due to the nature of the products, they have to pass several quality tests, and it is also important to keep track of which tests have been passed and which ones have not.Sponsorship: ShureDeliverables fro IPRO 313: Bar-Code and FIFO Systems Implementation at Shure for Fall 2005 semester

Bar-Code and FIFO Systems Implementation at Shure (semester?), IPRO 313: Barcode and FIFO Systems Implementation at SHURE IPRO 313 Abstract F05

The origin of this IPRO comes from the necessity of the company of tracking the items from start to finish. Due to the nature of the products, they have to pass several quality tests, and it is also important to keep track of which tests have been passed and which ones have not.Sponsorship: ShureDeliverables fro IPRO 313: Bar-Code and FIFO Systems Implementation at Shure for Fall 2005 semester

Bar-Code and FIFO Systems Implementation at Shure (semester?), IPRO 313

The origin of this IPRO comes from the necessity of the company of tracking the items from start to finish. Due to the nature of the products, they have to pass several quality tests, and it is also important to keep track of which tests have been passed and which ones have not.Sponsorship: ShureDeliverables fro IPRO 313: Bar-Code and FIFO Systems Implementation at Shure for Fall 2005 semester

Bar-Code and FIFO Systems Implementation at Shure (semester?), IPRO 313: Barcode and FIFO Systems Implementation at SHURE IPRO 313 Final Report F05

The origin of this IPRO comes from the necessity of the company of tracking the items from start to finish. Due to the nature of the products, they have to pass several quality tests, and it is also important to keep track of which tests have been passed and which ones have not.Sponsorship: ShureDeliverables fro IPRO 313: Bar-Code and FIFO Systems Implementation at Shure for Fall 2005 semester