OFDM technology has been used in various high speed wide bandwidth wireless system.
正交频分复用(OFDM)技术已经广泛应用于各种高速宽带无线通信系统中。
Compared with other wireless communication technologies, it features wide bandwidth, high speed and security.
红外无线数字通信技术与其它无线通信方式相比有宽带、高速、安全性高等特点。
Therefore, a single compact antenna that has an impedance bandwidth wide enough to cover the operating frequency bands of the multi-band wireless communication system is more desirable.
对于这种无线多频通信系统来说，具有紧凑结构并能覆盖这些通信频段的带宽的天线是人们所希望的。
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