Design and Implementation of an LTE System with Multi-Thread Parallel Processing on OpenAirInterface Platform

2016 IEEE 84th Vehicular Technology Conference (VTC-Fall) Pub Date : 2016-09-01 DOI:10.1109/VTCFall.2016.7880957

Hengyang Shen, Xingguang Wei, Haitao Liu, Yang Liu, K. Zheng

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引用次数: 7

Abstract

Software Defined Radio (SDR) system has great advantages of high flexibility and better reconfigurability in simulating and verifying the new communication technologies. Among all the SDR systems based on general purpose processor (GPP), OpenAirInterface (OAI) is one of the most comprehensive and competitive open-source SDR systems. Due to the design of signal-thread processing in the system, the user equipment (UE) of OAI still cannot process the vast amounts of data when the bandwidth is up to 20 MHz in the real-time experiments. This paper provides an overview of the system architecture in the real-time experimentation of OAI and analyzes its baseband signal processing. Then, the authors of this paper propose and implement a method of multithread parallel processing on the UE of OAI. Over-the-air experiments are carried out with the proposed method for the purpose of performance evaluation in the real- time wireless environment. Results demonstrate that the proposed method enhances the performance of the OAI system and shows its potential for the fifth generation (5G) technology.

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基于OpenAirInterface平台的多线程并行处理LTE系统的设计与实现

软件定义无线电(SDR)系统在仿真和验证新通信技术方面具有灵活性高、可重构性好等优点。在所有基于通用处理器(GPP)的SDR系统中，OpenAirInterface (OAI)是最全面、最具竞争力的开源SDR系统之一。由于系统中信号线程处理的设计，在实时实验中，当带宽达到20mhz时，OAI的用户设备(UE)仍然无法处理海量数据。本文概述了OAI实时实验中的系统架构，并对其基带信号处理进行了分析。在此基础上，提出并实现了一种在OAI终端上进行多线程并行处理的方法。为了在实时无线环境下进行性能评估，采用该方法进行了空中实验。结果表明，该方法提高了OAI系统的性能，并显示出其在第五代(5G)技术中的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)

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