BAE系统公司将开发一种新型雷达预警接收机原型，该原型能实时识别无线电频率和通信活动。
BAE Systems will develop a new radar warning receiver prototype that can identify radio frequency and communications activity in real time.
因此，针对特定通信系统的要求，研究相应的新型微带天线具有重要的意义。
So it is necessary to design novel microstrip antenna for specific communication systems.
通过在OFDM通信系统中应用新型差分空时分组码（DSTBC），获得编码增益，无需信道估计。
By using new DSTBC in OFDM communications system channel estimation is nto necessary and coding gain is gotten.
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