然而由于移动台的尺寸和载频的限制，使多天线技术很难实现。

However, due to the size of a mobile and carrier frequency constraints, multiple antennas can not be possibly implemented.

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由于移动台只需使用一个天线，因而设计简单，成本低廉。模拟结果显示使用本方案后TD CD MA系统的性能获得很大提高。

Because only one receiving antenna is needed, the mobile handset is easy to design with low cost. Simulation results show that performance is greatly improved.

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适用于移动的台分集天线要求紧凑的天线结构，端口之间较大的隔离度以及较小的相关系数。

Diversity antenna which is adapted for mobile station needs compact antenna configuration, high isolation and small correlation coefficient between multiple ports.

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