信道估计下的导航接收机多址干扰消除

Multi-Access Interference Cancellation of Navigation Receiver by Channel Estimation

针对无线电导航系统中存在多址干扰,提出了一种插入导频信号实现信道估计的算法,并在此基础上恢复干扰导航台信号,采用并行干扰抵消算法消除干扰信号。比较分析了干扰消除接收机与传统RAKE接收机在不同信噪比环境下的性能,分析表明,所提出的干扰消除算法易于实现,大大降低了接收机的误码率,缩小了接收机受"远-近"效应影响的区域。

A channel estimation algorithm based on inserting pilot signal was proposed to solve the problem of multi-access interference in radio navigation receiver system. On the basis the interference pilot signals are recovered and cancelled by adopting parallel interference cancellation algorithm. Compared the performance of the interference cancellation technique with that of traditional RAKE receiver under different signal-noise ratio environments, it is indicates that this interference cancellation algorithm is easy to be achieved, the receiver's bit error rate based on the algorithm is reduced greatly, and it has a good effect on the far-near resistance.