The advance of the modern technology, the broad collaboration of space agencies and the development of commercial space area make space missions diversity.
由于技术进步，各空间机构广泛的合作以及商用空间领域的开展，使空间任务变得复杂多样。
For the OFDM system, a scheme of combining space-time code with the adaptive power control technology is proposed with simulation results, which increases the diversity gain and the adaptive gain.
对OFDM系统提出将空时编码与自适应功率控制技术相结合，给出了仿真结果，提高了分集增益和自适应增益。
This technology USES antennas of other users as relays in wireless networks to achieve space diversity and full diversity gain.
这种技术利用通信网中其它用户的天线作为中继，实现“虚拟天线”的空间传输分集，从而提高系统性能。
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