空分多址技术将空间分割成不同的信道，从而实现频率重复使用。在下列通信实例中，使用空分多址技术的是 （）。
- A.有线电话
- B.卫星通信
- C.局域网通信
- D.有线电视广播
正确答案及解析
正确答案
解析
空分多址（SDMA）：这种技术是利用空间分割构成不同的信道。举例来说，在一颗卫星上使用多个天线，各个天线的波束射向地球表面的不同区域。地面上不同地区的地球站，它们在同一时间、即使使用相同的频率进行工作，它们之间也不会形成干扰。
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