基于CC1110的无线认识实验平台的设计

Design of Experimental Platform of Cognitive Radio Based on CC1110

随着无线通信技术的发展,无线频谱资源变得越来越紧张.目前的频谱资源分配方法,有相当一部分频谱的利用率是很低的.针对这个问题,对认知无线网络中,非授权用户接入频谱空隙的方法进行研究,提出了一种基于载波检测的设计方案.该硬件设计中采用集成了MC8051和CC1100射频发射模块的CC1110,运用CC1100的CSMA功能来实现非授权用户监测频谱空隙,非授权用户能够准确地检测和利用处于空闲状态的频谱,并进行数据的发送与接收.经试验测试,本平台达到了提高频谱资源的利用率,基本具有同构网络中非授权用户智能接入的能力.

With the development of wireless communication technology, wireless spectrum is wholly inadequate. The spectrum shows a low utilization ratio, according to the current allocation of the resources. To exploit unused spectrum more efficiently in dynamically changing environments, an intelligent access spectrum hole method for cognitive users based on carrier detection was proposed. It was constituted by MCS8051 microprocessor and CC1100 transceiver module in hardware. The CSMA function of CC1100 was used to achieve non-authorized users to monitor the spectral gap. The system can make the cognitive user access the spectrum hole successfully, send and receive data correctly. The testing shows that this design improves the utilization of the radio spectrum in the mass environment and basically achieves the purpose of co-existing with individual homogeneous network users.