基于FPGA的数据透传方法在Small Cell中的应用

摘要

In the TD-LTE small cell design, it always needs a single RF to achieve the transceiver function. Due to the relationship of DAC start time, the FR chip needs to work in FDD mode. In order to resolve the communication problem between the base chip which works in TDD mode and the RF chip, a data pass_through method is designed, realizing the data forwarding from TDD to FDD format and FDD to TDD format. Experimental results show the stability and accuracy of the data_through method.%在TD-LTE small cell（小小区基站）设计中，需要单块芯片实现射频收发器功能，常用的射频芯片由于DAC启动时间的关系而必须工作在FDD（频分双工）模式之下。为解决处于FDD模式之下的射频芯片和处于TDD（时分双工）工作模式之下的基带芯片之间的通信问题，提出了一种基于FPGA的数据透传方法，实现了从射频芯片到基带处理芯片方向（即RX方向），FDD向TDD格式数据的转发；基带处理芯片到射频芯片方向（即TX方向），TDD向FDD格式数据的转发。从实验的角度验证了此方法数据传输的准确性和稳定性。