强窄带干扰存在时 IEEE 802.15.6 协议下的同步算法

脉冲超宽带(impulse radio ultra-wideband, IR-UWB)是一种通过发射极窄脉冲进行信息传输的无线电技术. 由于脉冲超宽带技术的工作频带特别宽, 因此易混入其他无线系统的窄带干扰信号. 针对超宽带系统中物理层同步头 Kasami 序列的特点, 提出了一种在 IEEE 802.15.6 协议下的同步算法. 一个 Kasami 序列可以被选为与接收信号进行积分相乘的同步模板. 仿真结果表明, 在存在强窄带信号干扰和码间干扰的情况下, 该同步算法比其他针对 IEEE 802.15.6 协议的算法有更高的同步成功率和更低的复杂度.

Synchronization algorithm for IEEE 802.15.6 protocol in the presence of strong narrowband interference

Impulse radio ultra-wideband (IR-UWB) is a radio technology that transmits information over a broad bandwidth, and which can receive narrowband signals from existing wireless systems with narrowband interference. In this study, a novel synchronisation algorithm is proposed for the IR-UWB receiver, targeting the IEEE 802.15.6 Standard according to the characteristics of the Kasami sequence in the UWB synchronisation header. A Kasami sequence, which is selected as the template, is multiplied by the received signal. The simulation results demonstrate that the proposed algorithm has a higher synchronisation success rate and lower complexity compared with other algorithms that focus on the IEEE 802.15.6 protocol.