基于FPGA的LTE解调参考信号生成的实现

The Implementation of the Generation of LTE Demodulation Reference Signals Based on FPGA

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 .