Transceivers are used in many communication systems including wireless devices, for example.

包括无线设备的多种通信系统中都使用了收发信机。

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Indoor wireless devices are usually low-power equipped, in order to cover the entire indoor environment, use several transceivers to format a network is very necessary.

室内无线设备的功率一般较低，为了解决覆盖整个室内环境的问题，多节点形成网络是必须的。

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The wireless communication revolution has spawned a revival of interest in the design and optimization of radio transceivers.

无线通信的迅猛发展激发了射频收发器设计的热潮。

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In a new study, Patwari showed a network of 20 wireless transceivers placed around a hospital bed could reliably detect breathing and estimate breathing rate to within two-fifths of a breath per minute based on 30 seconds of data.

ENGADGET: Researchers use wireless network to monitor breathing, could save lives

While he estimates it will be five years until such a product is on the market, Patwari says a network of wireless transceivers around a bed can measure breathing rates and alert someone if breathing stops without any tubes or wires connected to the patient.

ENGADGET: Researchers use wireless network to monitor breathing, could save lives

Because the technique uses off-the-shelf wireless transceivers similar to those used in home computer networks, "the cost of this system will be cheaper than existing methods of monitoring breathing, " says Neal Patwari, senior author of a study of the new method and an assistant professor of electrical engineering.

ENGADGET: Researchers use wireless network to monitor breathing, could save lives