摘要
文中提出一种针对多用户数据传输的干扰消除方法,主要用于卫星转发地面多用户数据链路传输中的用户间干扰消除。本文介绍基于并行干扰消除的多用户检测方法的基本原理,通过LMS算法推倒用户幅度信息,给出具体实现系统模型。利用Xilinx Vertix4系列FPGA芯片在系统时钟为110 MHz时对文章提出的方法进行验证。结果表明,该方法使误码率得到有效降低,增加系统容量。本方法已应用于实际工程中,性能指标良好。
This paper presents a method of interference cancellation for the muhiuser data transmission,mainly used for satellite transponder ground multiuser data transmission in the inter user interference cancellation.This paper introduces the basic principle of multiuser detection parallel interference cancellation method based on LMS algorithm,through down the user amplitude information,gives the concrete realization system modeLThe method proposed to using Xilinx Vertix4 FPGA in 110MHz system clock is verified.The results show that the method can reduce the BER and increase system capability. The method has been successfully applied to the actual project.
出处
《电子设计工程》
2015年第13期182-184,188,共4页
Electronic Design Engineering
关键词
多用户检测
干扰消除
数据传输
误码率
multiuser detection
interference cancellation
data transmission
BER
