For the directionalantenna and wireless channel characteristics, there are many directionalantenna based access control protocols have been proposed to achieve channel spatial reuse.
针对定向天线和无线信道的特点，有许多基于定向天线的接入控制协议被提出来，以实现信道的空分复用。
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The characteristics of the omni-directional periodic circular dielectric rod leaky-wave antenna are analyzed by the improved perturbation method.