基于 FPGA 的 LTE 解调参考信号生成的实现

摘要

参考信号在LTE（ Long Term Evolution ，长期演进）中具有重要的作用，主要用于接收端提取信息并用于信道估计、均衡等。根据LTE系统相关的物理层协议规范，结合现场可编程逻辑门阵列（ Field-Programmable Gate Array ， FPGA）设计技术，给出了解调参考信号生成的设计流程图。并采用ALTERA公司Cyclone III系列的FPGA芯片实现了解调参考信号的生成。仿真结果表明，基于FPGA的解调参考信号生成实现方案能够达到LTE相关协议规定的要求。%The reference signal plays an important role in LTE ( Long Term Evolution ) , which is mainly used to extract information for channel estimation , equalization and etc ..According to the LTE physical layer protocol specification , the paper presents the design flow chart of the generation of the demodulation reference signal with the field programmable gate array ( FPGA) design techniques by using the FPGA chip of ALTERA's Cyclone III series .Simulation results show that the FPGA-based demodulation refer-ence signal generation program can achieve the requirements of LTE-related specifications .