This invention is method of pre-computing the optimal pairing of antennas to RF/ analog frontends in wireless MIMO systems without the need for computationally...
This invention is method of pre-computing the optimal pairing of antennas to RF/ analog frontends in wireless MIMO systems without the need for computationally complex and power consuming searches. Other MIMO antenna selection schemes demand an exponential computational order for an exhaustive search, and slightly less for sub-optimal selection.
This new technique requires zero real-time computations and minimal memory for near-optimal anenna selection.
When mathematically expressing the computation requirements for MIMO systems, the relationship of the number of antennas in the device (N) to number of RF frontends (M) is exponential (NM) for exhaustive searches and semi-linear [(N2M) or (N4M)] for iterative/ sub-optimal searches. An antenna selection algorithm that eliminates significant computational requirements, and requires memory of a linear order, defined by the product of the number of antennas and the number of frontends. Estimating the angle spread concisely encapsulates the sources of distortion and interference as clusters. The algorithm then selects the optimal frontend-antenna pair to compensate for those clusters.
Professor Thomas Huang and his research group have developed a new method of recovering high-resolution images from their low-resolution observations. They...
Professor Thomas Huang and his research group have developed a new method of recovering high-resolution images from their low-resolution observations. They developed a Recurrent Neural Network Model for image super-resolution which fully exploits sparse representations prior while keeping all the benefits of deep networks.
They trained a cascade of RNNs, each with a fixed upscaling factor, enabling high resolution images upscaled by large ratios to be obtained with less training efforts and better recovery quality This technique had higher Peak Signal to Noise ratio than the best state of the art methods by up to 1dB.
This software makes possible real-time, remote, dynamic transmission of fluoroscopic medical imaging sessions.
Using standard MPEG video compression, a...
This software makes possible real-time, remote, dynamic transmission of fluoroscopic medical imaging sessions.
Using standard MPEG video compression, a patient's medical images are transmitted in real time using a broadband Internet connection in a best-effort format. The transmitting computer, equipped with a video-encoding card and custom developed software is located in a remote hospital x-ray suite and is connected to a fluoroscope. This computer is fully controlled by a Control and Analysis Computer (CAC) which is located in the clinic or laboratory of a clinical specialist in the area of interest for diagnosis. The diagnostic specialist uses a speaker telephone and web camera to communicate with the x-ray suite.
While the best-effort format is transmitted in real time, the high quality images are simultaneously stored and later transferred offline to the CAC for accurate and detailed analysis. The CAC can support computers at any number of Internet-connected hospitals. Once the video images are transferred after the examination, the clinician at the central site can make measures of temporal events, bolus transport, and displacements of anatomical structures visible by fluoroscopy. The system is HIPAA compliant.
Using software, a video encoding card, and control algorithms, this technology makes possible real-time consultation with medical experts who are not in the same location as the patient. The diagnostic experts can direct the patient examination based on the dynamic images transmitted in real time, over the Internet. This allows the examination to be both time and cost savings, as well as healthier for patients. The software runs on two off-the-shelf computers. The first computer is connected to a local fluoroscope and uses a video encoding board. The computer transmits real-time dynamic images of the examination over the Internet via control by a diagnostic professional at the other computer located at a central location. The session is simultaneously recorded onto the hospital computer for transfer or play-back at another time. The real-time protocol streamlines transmission because it bypasses some frames in the diagnostic session, avoiding potentially time-consuming delays on the Internet. This loss in image quality does not impact the diagnostic process because the high quality images used for diagnosis are transferred after the session is completed.
This technology is flexible: Although it was originally designed for diagnosis of oropharyngeal swallowing disorders, its use is not limited to fluoroscopy. The technology can be used with any dynamic imaging equipment found in a hospital or clinic. This technology uses readily available components. It is based on a commonly used operating system in the US: Windows 2000/XP Professional. Because the developers designed the technology to be used by clinicians and not by computer specialists, it has been designed to be easy to set up and run on both the PC at the remote hospital site and the PC at the diagnostician's site. The technology has been developed so that the PC located at the remote hospital is completely controlled by the computer used by the diagnostic professional. The interface to the controlling computer is a graphical user interface (GUI) and has been continually enhanced during the usability study by clinicians. The control and analysis process is shown in steps with descriptive explanations.
NCSA has developed a software suite that allows novices to edit and manage content directly on a website and corporations to maximize the efficiency of both the...
NCSA has developed a software suite that allows novices to edit and manage content directly on a website and corporations to maximize the efficiency of both the users in their organization and of their content management system. This comprehensive software solution is ideal for individuals, small businesses and large corporations alike, since it provides any worker with the power to easily create, update, organize, and modify content.Thus families and small businesses, including home-based businesses, gain the ability to set up and maintain a web presence, and large corporations free up the time of their IT personnel to focus on other more difficult and time consuming technology issues.
Editable Web Browser (EWB)
EWB allows highly simplified, real-time creation and editing of Web pages by authorized users. Rather than relying on a webmaster to make changes or post content, authorized users can now create and maintain a website or particular web pages themselves.Tasks such as adding new pages, correcting typos, and updating time sensitive information can be performed in the Web-browser environment with which they are already familiar. Documents are edited on the user's machine and transferred to the Web server, but to the user, EWB appears to make changes instantly on the Web server. EWB also can be used to create Web pages from scratch, providing a friendly interface for users who are not tech savvy.
Online Document Sharing/Collaboration
Ideal for small companies, clubs, and other organizations, allowing them to publish to the World Wide Web via a single mouse click. Users can intuitively create remote shared files with an integrated multilevel security system to enable online collaboration. If desired, these shared files can be made easily accessable via a Web browser or by using a Windows or Unix client.
Online Database Creation and Management
Users with little or no database knowledge can create Web-accessible databases and easily populate and search them. Users can select the field types-text, numbers, dates, images, etc.- naming them and easily uploading the relevant content. Most currently available Web-based database creation tools require the user to design and manage both the database and a set of HTML pages for accessing that database. This software provides a database with built-in Web support, allowing one-click creation of search and browse pages. Conversely, the user can choose to create their own HTML code by hand or by using the Editable Web Browser as an advanced option for presenting the database.
Digital Multimedia Management
Create "albums" containing digital multimedia files (digital multimedia files containing photos, video, audio, etc.) and publish electronic galleries and scrapbooks on the Web quickly and easily. This software provides Web based scrapbooks, allowing users to interactively place content such as images and text with absolute positioning. These capabilities are further expanded by allowing users to make audio and freehand drawing annotations.
Content Management System (CMS) with Variable Predicate Targeting
Unlike static Web pages with permanent content, a CMS creates template-based Web pages, temporarily importing content (e.g., articles, product information) from a database into the template fields. This CMS is a unique design that provides a flexible environment for the rapid creation and deployment of database-driven Web sites. Novel user-developed applications can be easily incorporated into a working site that already contains the necessary supporting systems by use of simple plug-ins. A key element of this CMS is its "variable predicate content targeting system." Targeting involves changing how information is delivered according to time, the device being used to access the Web page(e.g., cell phone, personal digital assistant[PDA]), specifics about the person viewing the page, or other arbitrary criteria. This targeting system uses several novel techniques to provide an extremely flexible system that is considerably more powerful than existing systems, but in a much simpler and more user friendly form.
Researchers from the University of Illinois have developed a novel way of addressing the problem of manual workface assessment by developing an intuitive web-...
Researchers from the University of Illinois have developed a novel way of addressing the problem of manual workface assessment by developing an intuitive web-based platform for crowdsourcing the task through massive marketplaces such as Amazon Mechanical Turk. They found that non-expert annotators on Amazon Mechanical Turk were as reliable as construction experts for providing accurate and complete workface assessment results. This technology has the potential to minimize the time needed for workface assessment and allows onsite professionals to focus their time on more important task of root-cause analysis and performance improvements.
More information about the Real-time and Automated Monitoring and Control group can be found here: http://raamac.cee.illinois.edu/
Professor Marcelo Garcia and his extensive team of fellow researchers and graduate students has developed new software to model combined sewer systems and...
Professor Marcelo Garcia and his extensive team of fellow researchers and graduate students has developed new software to model combined sewer systems and associated waterways of the Chicago Area. Built over a period of 10 years, it has comprehensive data collection and only commercially available product that couples dissimilar models in one application and it will be valuable to any hydrologic or hydraulic consultant operating in the Chicago Region. Using this software, consultants will be prepared to give a more informed opinion on how to build and maintain sewer systems.
Dr. Vetle Torvik fhas developed a new software tool for identifying scientific articles cited by patents. Using advanced probabilistic models and machine learning...
Dr. Vetle Torvik fhas developed a new software tool for identifying scientific articles cited by patents. Using advanced probabilistic models and machine learning, the software tracks down the links to databases containing a particular citation. It can determine the names of articles and the authors cited by the examiner even if the citation does not adhere to any standard format with improved accuracy over existing methods.
For more information please see the poster here for details: https://www.ideals.illinois.edu/handle/2142/54885
GoldMine software technology is an automated assertion generation tools to aid with the hardware design verification process. It uses data mining and static...
GoldMine software technology is an automated assertion generation tools to aid with the hardware design verification process. It uses data mining and static analysis to generate propositional and temporal assertions in Verilog RTL.
The suite also includes:
For more information, visit the goldmine website: http://goldmine.csl.illinois.edu/
This invention provides a new method of simultaneously addressing two major problems in high-capacity wireless communications: signal fading and interference. The...
This invention provides a new method of simultaneously addressing two major problems in high-capacity wireless communications: signal fading and interference. The technology consists of a new signal control algorithm that reformulates the minimum mean squared error (MMSE) criterion. Adaptive receivers for interference suppression based on the standard MMSE criterion fail over fading channels. In contrast, adaptive interference suppression based on the new differential MMSE (DMMSE) criterion is robust over rapidly varying fading channels and provides large performance and capacity gains over conventional receivers for code division multiple access (CDMA) systems. The DMMSE criterion also provides beamforming and equalization receiver techniques for CDMA systems, which converge rapidly without requiring any training overhead. These receiver innovations are directly applicable to second- and third-generation CDMA commercial cellular networks as well as to spread spectrum and CDMA-based military communication systems.
This technology uses an adapted minimum mean squared error criterion to successfully solve the problems of signal fading and interference without using up bandwidth. It also enables successful equalization and beamforming for receiver antenna arrays for code division multiple access systems.
How It Works
This invention reformulates the MMSE criterion so that it applies to systems in which the data being tracked are the ratios of the data appearing in successive observation intervals. The new differential MMSE criterion leads to a number of novel algorithms for adaptive implementation of the MMSE receiver. The result is that signal fading and interference are prevented without using the bandwidth that other systems require. A standard linear MMSE receiver minimizes the mean squared error between the receiver output and the desired sequence. Such a receiver uses adaptive algorithms that are initialized by a known training sequence. However, if the desired sequence varies rapidly over time, the adaptive algorithms are unable to compensate for the unknown gain. Thus, while MMSE interference suppression is well known to give better performance and increased capacity for CDMA systems than conventional reception, these benefits have been difficult to realize in practice.
This invention uses a new differential MMSE criterion that assumes that the unknown gain is roughly constant over two observation intervals. Using the criterion, the desired data can be tracked without the need for explicitly estimating or tracking the unknown gain. This makes adaptive interference suppression practical for commercial CDMA systems, thus providing significant gains (in terms of either the number of users supported or the bandwidth per consumer) over conventional receiver techniques. This invention also addresses the shortcomings of existing methods used in beamforming applications for receiver antenna arrays. For direct sequence CDMA systems with long spreading sequences, current methods require that training symbols be included in the transmission. However, a novel application of the DMMSE criterion removes the need for training altogether, using instead the receiver's knowledge of the spreading sequence.
The resulting beamforming and equalization algorithms perform all the benefits of training-based algorithms without any of the overhead. Use of the DMMSE criterion in receiver design optimizes the use of scarce wireless bandwidth by allowing more users to be supported for the same bandwidth or providing a larger bandwidth per user. The new techniques are directly applicable to second- and third-generation cellular and personal communication systems as well as to direct sequence spread spectrum-based military communication systems. Implementing this technology may require minor changes in hardware configurations; however, these changes would be simple and inexpensive. And the resulting increase in available bandwidth will make the benefit well worth the cost.
Cellular phones and base stations Personal communication systems Any direct sequence CDMA system with long spreading sequences, including second- and third-generation cellular networks and military communication Other applications where receivers must cope with rapid channel time variations
Conventional receivers in CDMA systems are interference-limited, and vulnerable to the near-far problem. However, advanced interference suppressing techniques are difficult to implement over time-varying channels. The DMMSE criterion enables adaptive receivers that suppress interference while being robust to wireless channel time variations. Increases the capacity and the bandwidth per user in wireless networks Suppresses interference while being robust to fading for CDMA systems with short spreading sequences Provides superior beamforming and equalization, without requiring any training, for CDMA systems with long spreading sequences