ITTC Project

Project Award Date: 0000-00-00


The objective of this project is the implementation and demonstration of a complete adaptive voice/data (AVD) network, including switches and terminal units, based on wireless asynchronous transfer mode (ATM) technology. This network will serve as a testbed for investigation into the delivery of voice, images, and data to remote users using highly interoperable ATM technology. Dynamic bandwidth allocation algorithms using low bit rate speech coding based on the Sinusoidal Transform Coder are used in the ATM wireless environment. Existing ATM standards are the basis for network control and management where possible, and research into extending the technology into the narrowband arena is being performed. A testbed to evaluate the use of the bit-rate adaptive characteristics of the Sinusoidal Transform Coder (STC) as a means of congestion control for voice/data networks is being designed and built. The testbed consists of two existing network switches and three voice/data terminal units developed in this project. The terminal units are connected to the switches by wireline or wireless modems, and support voice or data traffic. The terminals support bit rate adaptation protocols implemented in the AVD switch. The components of the network support dynamic allocation of bandwidth between voice and data streams, using the bit rate transformation schemes associated with the Sinusoidal Transform Coder. The narrowband network is interfaced to other ATM facilities such as the MAGIC gigabit testbed or the Rapidly Deployable Radio Network (RDRN), as well as to standard ISDN facilities, to demonstrate interoperability.

This project consists of several major tasks:

(1) AVD switch modifications for ATM networks

(2) implementation of the terminal units for the AVD network

(3) development and implementation of the ATM wireless network architecture

(4) host application software design

(5) demonstration of interoperability over ISDN facilities

(6) demonstration of interoperability over future facilities typified by the DREN Testbed

For More Information:


Faculty Investigator(s): Guanghui (Richard) Wang (PI)

Project Sponsors

Primary Sponsor(s): Rome Laboratories

Partner with ITTC

The Information and Telecommunication Technology Center at the University of Kansas has developed several assistance policies that enhance interactions between the Center and local, Kansas, or national companies. 

ITTC assistance includes initial free consulting (normally one to five hours). If additional support is needed, ITTC will offer one of the following approaches: 

Sponsored Research Agreement

Individuals and organizations can enter into agreements with KUCR/ITTC and provide funds for sponsored research to be performed at ITTC with the assistance of faculty, staff and students.

Licensing and Royalty/Equity Agreement

An ITTC goal is the development of investment-grade technologies for transfer to, and marketing by, local, Kansas, and national businesses. To enhance this process, the Center has developed flexible policies that allow for licensing, royalty, and equity arrangements to meet both the needs of ITTC and the company.

Commercialization Development

Companies with a technology need that can be satisfied with ITTC's resources can look to us for assistance. We can develop a relationship with interested partners that will provide for the development of a technology suited for commercialization.

ITTC Resource Access

ITTC resources, including computers and software systems, may be made available to Kansas companies in accordance with the Center's mission and applicable Regents and University policies.

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