Project: IEEE Working Group for Wireless Personal works (WPANs) Submission Title: [Propagation notes to SG3a from IEEE Tutorial] Date Submitted: [17 July, 2002] Source: [Kai Siwiak] Company: [Time Domain Corporation] Address: [7057 Old Madison Pike, Huntsville, AL 35806] Voice: [256-990-9062] E-Mail: [ @ ] Re: [Response to the Call for Contributions on UWB Channel Models (IEEE -02/208r1-SG3a).] Abstract: [This contribution shows that a fundamental system gain limit in UWB places a constraint on maximum data rate versus bandwidth.] Purpose: [This contribution shows a fundamental system limit in UWB which is relevant to path loss and defines the fundamental limitations to range at a specific data rate in free space propagation. It is mended that this fundamental limit be used to represent the performance of UWB systems instead of models representing tough RF environments which might be interpreted to conclude that UWB physical layer submissions for a high-rate extension to IEEE would not work. The models need be concerned with selection criteria rather than with system design efforts. System designers will consider operating environments and other factors in designing and delivering robust implementations.] Notice: This document has been prepared to assist the IEEE . It is offered as a basis for discussion and is not binding on the contributing individual(s) anization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution es the property of IEEE and may be made publicly available by . July, 2002 1 Time Domain Corporation UWB Propagation notes to SG3a A Fundamental System Gain Limit (Limit) for UWB can be defined in terms of: regulatory emission limits frequency band ideal modulation performanc
