目前在移动通信中应用的多址方式有:频分多址(FDMA)、时分多址(TDMA)、码分多址(CDMA)以及它们的混合应用方式等。 蜂窝系统中是以信道来区分通信对象的,一个信道只容纳一个用户进行通话,许多同时通话的用户,互相以信道来区分,这就是多址。
This is a preview. Log in through your library . Abstract To determine if radiofrequency (RF) radiation induces the formation of micronuclei, C3H 10T 1/2 cells were exposed to 835.62 MHz frequency ...
The GLONASS-K satellite, transmitting a CDMA signal in the L3 band, inaugurates a new era of radionavigation signals for both the Russian system and for international GNSS interoperability. As demand ...
Single Carrier FDMA has been recently considered as a promising uplink transmission Scheme for next generation mobile communications due to its low peak-to-average power ratio. In this project we ...
ITS name hardly trips off the tongue. But thanks to a boffin from Bell Labs in New Jersey, plus the rise of the microprocessor and some engineers in San Diego who wouldn't take no for an answer, ...