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公开(公告)号：EP1460772A2
公开(公告)日：2004-09-22
申请号：EP04013982.6
申请日：1995-08-15
IPC分类号： H04B1/40
CPC分类号： H04B1/406 , H04B1/005 , H04B1/0057 , H04B1/006 , H04B1/10 , H04B1/69 , H04B1/707 , H04B7/2634 , H04B2201/7071 , H04J13/00 , H04L1/0001 , H04L1/0002 , H04L27/12 , H04W88/06
摘要： A technique for spread-spectrum communication (figs. 1, 3, 12 and 14) which uses more than one mode and more than one frequency band. Selectable modes include a narrowband mode (113) and spread-spectrum mode (111), or cellular mode and microcellular mode. Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850-1990 MHz and 2.4-2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of a communication with a private access network. A multi-band transmitter (fig. 12) comprises a single frequency synthesiser and a frequency source (606) (e.g. a local oscillator), coupled to selectable band pass filter (619, 620). A multi-band receiver (fig 14.) capable of monitoring one or more frequency bands comprises bank of bandpass filters (714, 715) and a demodulator comprising a single frequency synthesiser and a frequency source (721).
摘要翻译： 扩频通信技术（图1,3,12和14）使用多种模式和多个频段。 可选模式包括窄带模式（113）和扩频模式（111），或蜂窝模式和微蜂窝模式。 可选频段包括有执照和无执照频段，特别是包括902-928 MHz，1850-1990 MHz和2.4-2.4835 GHz频段的频段。 扩频通信信道的宽度为10 MHz或更少。 扩频信号编码的频带可以根据环境或其他控制触发的变化而改变，例如与专用接入网络建立或解除通信。 多频带发射机（图12）包括耦合到可选带通滤波器（619,620）的单个频率合成器和频率源（606）（例如本地振荡器）。 能够监视一个或多个频带的多频带接收机（图14）包括带通滤波器组（714,715）和包括单个频率合成器和频率源（721）的解调器。
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公开(公告)号：EP1460772A3
公开(公告)日：2004-10-13
申请号：EP04013982.6
申请日：1995-08-15
IPC分类号： H04B1/40
CPC分类号： H04B1/406 , H04B1/005 , H04B1/0057 , H04B1/006 , H04B1/10 , H04B1/69 , H04B1/707 , H04B7/2634 , H04B2201/7071 , H04J13/00 , H04L1/0001 , H04L1/0002 , H04L27/12 , H04W88/06
摘要： A technique for spread-spectrum communication (figs. 1, 3, 12 and 14) which uses more than one mode and more than one frequency band. Selectable modes include a narrowband mode (113) and spread-spectrum mode (111), or cellular mode and microcellular mode. Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850-1990 MHz and 2.4-2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of a communication with a private access network. A multi-band transmitter (fig. 12) comprises a single frequency synthesiser and a frequency source (606) (e.g. a local oscillator), coupled to selectable band pass filter (619, 620). A multi-band receiver (fig 14.) capable of monitoring one or more frequency bands comprises bank of bandpass filters (714, 715) and a demodulator comprising a single frequency synthesiser and a frequency source (721).
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