Review the designer's selection of the foundation system and describe alternative foundation systems that could be used. State their advantages and disadvantages.
检视设计者对此基础系统的选择，并描述可替代之基础系统与彼此之优缺点。
In MIMO spatial multiplexing system, channel state information(CSI) is very useful for adaptive selection of the optimal precoding schemes which can enhance system performance effectively.
针对MIMO空分复用系统中利用信道状态信息自适应选择最佳预编码方案能有效提高系统性能，提出了一种基于有限比特反馈的预编码联合优化算法。
Compared with coherent antenna selection, the NON-AS algorithm do not require estimating channel state information, which greatly reduce system complexity.
与相干检测的天线选择相比，NON - AS算法不需要估计信道，大大降低了系统复杂性。
In a dynamic system analysis with the method of state variable, when the system is more complex, the selection of state-variable has some difficulties.
用状态变量法分析动态系统时，若系统比较复杂，对于状态变量的选择就存在一定的困难。
The questions of relay existing in imported equipment are introduced. The functions of different part of control system are expounded, and take the selection of PLC for example to state.
介绍引进设备使用继电器所存在的问题，论述控制系统各部分功能，举例说明P LC的选用。
The questions of relay existing in imported equipment are introduced. The functions of different part of control system are expounded, and take the selection of PLC for example to state.
介绍引进设备使用继电器所存在的问题，论述控制系统各部分功能，举例说明P LC的选用。
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