8kb /s速率mobitex调制解调器的性能分析与设计准则

[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI:10.1109/VETEC.1992.245460

M. El-Tanany, T.E. Morner, H. Stern

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引用次数: 1

摘要

一个调制解调器打算接口到450-MHz或900-MHz半双工，频率敏捷收发模块与支持微控制器电路讨论。集成无线电调制解调器单元将在美国的RAM移动数据美国有限公司合作伙伴分组无线网络和英国的RAM移动数据有限公司网络上运行。该网络使用无线协议在移动或便携式无线电调制解调器和按蜂窝式模式排列的固定基站之间提供分组链路。无线电调制解调器以8000-b/s的速率发送不超过7256b的GMSK调制数据报。该网络允许12.5 kHz信道间隔和无线电调制解调器发射功率高达10 W。RAM在美国被分配了200个频道对，在英国被分配了31个频道对。每个无线电调制解调器通过自动监测和选择所有附近小区的最佳信号强度来处理基站之间的漫游

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Performance analysis and design guidelines of a mobitex modem at 8 kb/s

A modem intended to be interfaced to a 450-MHz or 900-MHz half-duplex, frequency-agile transceiver module with supporting microcontroller circuitry is discussed. The integrated radio modem unit will operate on the RAM Mobile Data USA Limited partnership packet radio networks in the US and the RAM Mobile Data Ltd network in the UK. The network uses a wireless protocol to provide a packet link between mobile or portable radio modems and fixed base stations arranged in a cellular pattern. The radio modems transmit a GMSK modulated datagram of no more than 7256 b at a 8000-b/s rate. The network allows 12.5 kHz channel spacing and a radio modem transmit power up to 10 W. RAM has been assigned 200 channel pairs in the US and 31 channel pairs in the UK frequency bands. Each radio modem handles roaming between base stations by automatically monitoring and selecting the best signal strength of all nearby cells.<>

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[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology

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