异构无线中继GSM与CDMA信号识别算法

Signal Identification Algorithm for GSM and CDMA Signals in Heterogeneous Wireless Relays

针对异构无线通信网络环境下的无线中继需要同时识别多种无线信号的需求,以GSM和CDMA系统所构成的异构无线通信网络为例,提出了一种基于循环谱的GSM和CDMA信号识别算法。该算法分析并利用信号的循环谱特性来获得信号所在频道的中心频率和信号码率等特征参数的估计值,通过与期望信号(GSM或CDMA信号)特征参数值的比较来识别接收信号中所包含的期望信号。给出了算法的理论依据和具体实施步骤。仿真实验证明了该识别算法的有效性和可靠性。

Aiming to meet the requirement of identifying multiple wireless signals for the wireless relay in the heterogeneous wireless networks, a signal identification algorithm based on the circular spectrum has been proposed with the GSM and CDMA systems as an example of the heterogeneous wireless networks. By analyzing and exploiting the characteristics of the circular spectrum of the received signal, the estimations of the signal character parameters including the center frequency and code rate can be obtained. And the desired signals can be identified through the comparison of the estimation values and real values of the signal character parameters. The details of the proposed algorithm have been discussed. And simulations verify the efficiency and reliability of the identification algorithm.