The increasing role and volume of data communications combined with the convenience of wireless access provide the motivation for the development of high speed, compact, affordable and portable high data rate digital radios that can be... more
The increasing role and volume of data communications combined with the convenience of wireless access provide the motivation for the development of high speed, compact, affordable and portable high data rate digital radios that can be integrated with notebook computers and function for extended periods of time on battery power. Such radios can be constructed only as a result of an intense development effort in wireless communication systems and continued integration of hardware. High communication speeds dictate multi-megahertz channels which are more readily available at higher frequencies. Recent history of local and wide area wireless communications suggests the requirement for speeds of 10 Mbps or more, best implemented in the NII and HIPERLAN bands at 5 GHz and beyond.
A redundant data transmission system with linear topology is studied using reliability modeling of a heterogeneous hot standby system with one repair unit and exponential repair time of its failed elements (data transmission channels).... more
A redundant data transmission system with linear topology is studied using reliability modeling of a heterogeneous hot standby system with one repair unit and exponential repair time of its failed elements (data transmission channels). Two cases are considered-a special one, when the lifetime distribution of the elements is exponential, and a generalized one, when their lifetimes have general independent distribution. The goal of this paper is to calculate the reliability characteristics of the system and to investigate the effect of cross-redundancy on the system-level reliability.
