10 词条
主页 > 产品类别 > 移动通信 > 2G wireless network
2G wireless network
Second-generation (2G) digital cellular networks used by mobile phones. 2G networks was developed as a replacement for first generation (1G) analog cellular networks, and the GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony. This expanded over time to include data communications, first by circuit-switched transport, then by packet data transport via GPRS (General Packet Radio Services) and EDGE (Enhanced Data rates for GSM Evolution or EGPRS).
2G wireless network的贡献者
2G wireless network
空闲信道检测
移动通信; 2G wireless network
在多信道共用的无线通信系统中，搜索检测空闲信道，以便自动选接至该信道的过程，一种检测方法是搜索发出空闲信号的信道; 另一种方法是搜索无载波信道。 ...
载波频率偏置
移动通信; 2G wireless network
在多信道等距排列的无线通信网中，为了减少网内互调干扰和同频干扰，将网中部分电台的载波频率进行的一定偏置。其偏置量一般为信道间隔的一半。例如，信道间隔为25kHz，载频偏置则为12.5kHz。 ...
