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。
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