IEEE802.22中WRAN系统信道的探测

Survey of WRAN system channel in IEEE802.22

认知无线电技术(CR-cognitive radio)是软件无线电技术的演化,是一种新的智能无线通信技术。通过讨论IEEE802.22中WRAN系统信道的探测,分析了TDD和OFDMA WRAN系统的异步静态时间周期的算法,以及如何使用这个时间周期来探测信道。并分析了各种算法的优缺点。

Cognitive radio is the evolution of soft radio,and is a new intelligent wireless communication. This paper discusses on the survey of WRAN system channel in IEEE802.22, analyzes the algorithm of asynchronous static time period in TDD and OFDMA WRAN. It presents the method of survey the channel with the time period and merits and demerits of the algorithms.