But this method occupies the special sub-carriers or time slots and then reduces the system spectrum efficiency and data transmission rate.
但该方法占用专门的子载波或时隙，降低了系统的频谱利用率和信息传输速率。
A more efficient radio resource allocation and management scheme should be proved to transmit with higher spectrum and power efficiency and higher system performance.
需要研究更加有效的无线资源分配及管理策略，以便在有限的带宽上达到更高频谱效率、更高的发射功率利用率以及更好的系统性能。
MIMO-OFDM system is a seamless merger of MIMO and OFDM, which can potentially provide larger coverage range, more reliable transmission, higher date rate and spectrum efficiency.
MIMO和OFDM的结合可得到MIMO OFDM系统，它能使提供更大的覆盖范围，更好的传输质量，更大的数据速率和频谱效率。
应用推荐