摘要
多个跳频(FH)网络共存时,不同网络用户由于频率冲突而相互干扰。本文基于二维谐波恢复原理,提出一种联合跳频时间和频率估计的多用户检测算法。随后基于SOPC片上可编程系统硬件实现了该算法。仿真实验表明该算法可以在未知跳频速率、频率偏移以及跳频图案等参数的情况下拆分多个发生频率冲突的跳频信号。
Different FH wireless systems sharing the same frequency band and operating in the same environment,interference due to frequency collisions has become one of the main performance-limiting challenges. This paper proposes a multi-user detection algorithm for joint hop timing and frequency estimation based on the two-dimensional harmonic retrieval（2-D HR）. This algorithm was implemented by SOPC Technology. Simulation results show the method is capable of unraveling multiple FH signals in the presence of collisions and unknown hop rates,frequency offsets,and hop patterns.
出处
《微计算机信息》
北大核心
2007年第04Z期149-151,共3页
Control & Automation
基金
国家空间微波技术重点实验室基金编号(51473030105JB3201)
关键词
跳频
多用户检测
时频估计
片上可编程系统
frequency hopping,multi-user detection,timing and frequency estimation,SOPC
