Beyond Cognitive Radio in Wireless Feed-back Control Systems

限制反馈控制在无线通信系统中的应用，表明超越认知无线电是可以实现的，它不仅可以理解无线信道的物理环境，而且可以理解应用的语义环境。提出了一种载波侦听多址接入(CSMA)方案，该方案估计分组的重要性，并根据估计的重要性确定分组的优先级来控制退避时间。在假设有多个无线系统控制旋转倒立摆的情况下，通过计算机仿真评估了所提出的CSMA方案的性能。

Limiting the application in a radio communication system within feedback control, it was shown that beyond cognitive radio is realizable, which can understand not only the physical environment of the radio channel but also the semantic environment of the application. A carrier sense multiple access (CSMA) scheme was proposed, which estimates the importance of packet and controls the back-off time according the priority of the packet determined by the estimated importance. The performance of the proposed CSMA scheme was evaluated by computer simulation, assuming a situation where there were several wireless systems controlling rotational inverted pendulums.