数字扩频无绳电话系统硬软件的研究

数字扩频无绳电话系统是新一代的无绳电话系统,它具有语音清晰、保密性高、抗干扰性强等优点,在家庭和办公场所正迅速得到普及。将对数字扩频无绳电话系统的硬软件实现技术做详细的探讨,并具体介绍一种先进可行的实现方案。     

CT2及其在我国的发展

本文介绍了数字无绳电话系统(CT2)的应用方式和功能、系统和基站结构、CT2/CAI标准及其技术参数、CT2优缺点，并与其它公用移动通信系统进行了比较，最后论证了CT2在我国发展的可行性。     

STUDY OF RADIO DEVICES ON 2.4GHZ ISM BAND IN PHYSICAL PHASE

In the unlicensed 2.4GHz ISM band,there is not only IEEE 802.11 wireless systems being used,but also some other devices,such as residential microwave oven,Bluetooth devices,and cordless phone.All these devices that are not used for the data communications cause unintentional interference that will degrade the WI-FI system.In this paper,the transmission powers for common RF devices are measured and the SIR （signal-to-interference ratio） of different interferers to Wi-Fi is also studied.With this information,the effect of different interference on WI-FI signal can hence be quantified.Furthermore,the ability of the interference avoidance protocols,which is built into the AP, to address interference problems caused by that device is determined.