Using this method, a rectangular microstrip patch antenna loaded with a shorting pin is designed which operated at mobile communication frequency.
该优化设计方法共分两步进行，首先，对天线的频率特性进行优化，然后在此基础上对天线的阻抗特性进行优化。
However, for the wireless mobile communication systems, the radio channel is frequency selective and time-varying.
对于无线通信系统，无线信道不仅是频率选择性的，而且是时变的。
The next generation mobile communication 4g called will support very high data transmission rate. It's necessary to introduce technology with high frequency utilization in limited frequency spectrum.
未来的新一代移动通信系统4g需要提供极高的数据速率，在有限的频谱下提供尽可能高的传输速率，这就需要采用高频谱利用率技术。
At present, the frequency adapting to mobile com munication and wireless communication, is quite crowded and precious.
目前，适合于移动通信、无线通信的无线电频谱资源极为拥挤和宝贵。
Frequency hopping has the advantage of anti-jamming and the flexible of networks, it is important applications of military communication, mobile communication, modern radar and sonar.
跳频技术具有很强的抗干扰能力和组网灵活等优点，在军事无线通信、民用移动通信、卫星通信、现代雷达和声纳等电子系统中有重要应用。
The advantages of strong anti-interference, random address selection make slow frequency-hopping (SFH) communication have a wide application in the areas of military and mobile communication.
跳频通信由于具有较强的抗干扰能力和任意选址等优点而在军事通信和移动通信领域得到了广泛的应用。
The trend of the future mobile communication is digital transformation speed raised and radio frequency spectrum resource used sufficiently.
未来移动通信系统的发展趋势之一便是数据传输速率得到极大提高同时无线频谱资源会得到更充分地利用。
The invention discloses a frequency resource allocation method, a device, a wireless communication system and a mobile station.
本发明提出了一种频率资源的分配方法、设备、无线通信系统和移动站。
Mobile communication system 's upgrade needs new frequency. Base station antennas are needed to accord with the new frequency. This will increase the number of the base station antennas.
移动通信系统的不断升级，要求配置新的频段，这就要求适合新频段的基站天线，这样必然会增加天线的数目。
Orthogonal frequency division multiplex (OFDM) is suitable for Broadband-satellite mobile communication system with the advantage of robustness to muti-path and high bandwidth efficiency.
正交频分复用(OFDM)技术具有抗多径衰落，频谱利用率高等优点，适合于在宽带卫星通信这种无线环境下进行高速传输。
Orthogonal frequency division multiplex (OFDM) is suitable for Broadband-satellite mobile communication system with the advantage of robustness to muti-path and high bandwidth efficiency.
正交频分复用(OFDM)技术具有抗多径衰落，频谱利用率高等优点，适合于在宽带卫星通信这种无线环境下进行高速传输。
应用推荐