This radio communications system includes a plurality of base stations (10, 11 and 12) which each serve a region (Z0, Z1 and Z2) for information exchanges with at least one mobile station (46) by means of a TDMA-type multiplex. A time interval of the TDMA multiplex is provided ...
aA network consists of two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams. ...
When a radio signal is transmitted from a terminal device, each communications chip generates and outputs a corresponding radio signal in order that the signal level of the radio signal becomes a prescribed level. In this way, radio signals transmitted from a terminal device are propagated all ...
百度试题 结果1 题目What do the general radio communications relate to ? A. management of ship B. operation of ship C. safety of ship D. A, B,C and all right 相关知识点: 试题来源: 解析 D. A, B,C and all right 反馈 收藏
结果1 题目General radio communications in the global system may ___ship’s safety . A. be responsible for B. have an impact on C. command D. give a guidance to 相关知识点: 试题来源: 解析 B. have an impact on 反馈 收藏
The invention relates to a method and apparatus for channel hopping between mobile stations (MS1-MS3) and a base station (BS1) in a radio communications system. A channel allocation means (211) within the base station (BS1) generates channel hopping sequences that are transmitted via a contr...
communications, international conferences, and the spread of information over the radio and television networks of many nations. It is a language of wider communication for a number of developing countries, especially former British colonies. Many of these countries have multilingual populations and need...
__Radio is a great achievement as for communications. One can regard radio as one of the effects of the telephone and telegraph inventions. The inventors of telephone and telegraph had already introduced the technology of wire-to-wire communication; the inventor of radio took them one step ...
Radio communications device comprising at least one light source controlled by a digital signal 来自 百度文库 喜欢 0 阅读量: 13 申请(专利)号: EP20040364046 申请日期: 2004-06-30 公开/公告号: EP1494489A1 公开/公告日期: 2005-01-05 申请(专利权)人: WAVECOM 发明人:...
because water is no friend to radio signals, especially high frequencies. MIT is developing a system which bridges this watery gap and it relies onacoustic transmissions pointed at the water’s surface(PDF warning) and an airplane with high-precision radar which detects the oscillations of the ...