نتایج جستجو برای: land mobile radio cellular systems
تعداد نتایج: 1894523 فیلتر نتایج به سال:
Wireless communication technology such as cellular and wireless local area network (WLAN) systems have grown rapidly and generated various competing transmission formats. In the need of seamless communication across incompatible radio standards, software defined radio (SDR) concept has received much attention among researchers working in mobile and personal wireless communications. SDR is a tec...
A novel mathematical method is presented to express the outage probability for a desired radio signal received from a mobile transmitter in the presence of multiple interfering signals with combined lognormal and Rayleigh fading. In contrast to previously reported analysis, this exact method avoids approximation of the pdf of the received powers of the various signals. This is useful in determi...
Modern Land Mobile Radio has the potential for large growth in the near future. Current regulations have set the stage for a required transition to more spectrally efficient technologies. While several organizations are working to ease this transition, there still remain many details and feature sets which the end user must decide amongst and often there is no clear dividing line between these ...
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An important advantage of satellite transmission is their inherent capability to broadcast data to large audiences. The standard application is thereby to send data streams (i.e. TV) to wide audiences using fixed satellite receivers. An extension to this approach is broadcast to mobile receivers, especially cars. This has been realised in the U.S. by XM-Radio and Sirius. All these system have i...
Mobile/Wireless ATM is a rapidly developing field of research and standardization. The ATM Forum’s Wireless ATM specification version 1.0 is expected to be released by the end of 1999. It will cover the issues of wireless access to the ATM network and the network signaling and control functions for basic support of mobile virtual circuit ATM connections. While at the moment, WATM system are env...
Traditionally, wireless cellular communication systems have been engineered for voice. With the explosive growth of Internet applications and users, there is an increasing demand on providing Internet services to mobile users based on the voice-oriented cellular networks. However, Internet services add a set of radically diierent requirements on to the cellular wireless networks, because the na...
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