【作者】 周锋；

【导师】 林宏志；

【作者基本信息】 华中科技大学 ， 电子与通信工程， 2012， 硕士

【摘要】 LTE系统的标准采用MIMO、OFDM等先进的无线传输技术,扁平网络结构和全IP系统构架，支持最大20MHz的系统带宽，峰值速率200Mbit/s和更短的传输时延，显著地提高了系统吞吐量，这样就需要在用户端有更强的信号处理能力。因而在系统开发中将整个基带处理过程以软件形式在高速数字处理器中执行就非常有实用价值和应用意义了。在多核SB3500基带处理器该平台下能够运行任何通用的多模、多功能移动平台所需的无线协议,它的三个四线程DSP核能有效的进行物理层的任务处理。本文主要研究的是在SB3500处理器平台的构架和在此平台下用户端LTE基带处理的实现。首先介绍LTE物理层的基本概念以及物理层的一些关键技术，主要分析了上行基带处理的过程，包括信道编码、加扰和调制等过程，同时分析基带处理平台的控制接口协议，为在SB3500基带处理平台上实现相关算法提供基础理论知识。其次简要的介绍SB3500芯片特性和性能特性，以及该处理芯片的优势。同时详细的介绍其软件开发原理及开发流程。最后，结合SB3500处理器在算法执行方面的优势，对LTE用户端基带处理过程相关算法模块进行评估，分析基于该平台的利弊。实验仿真表明，基于该平台的LTE算法性能有明显的提升。更多还原

【Abstract】 LTE offers high space multiplexing gain and diversity gain with the adoption ofMIMO-OFDM as physical layer technology. MIMO, OFDM, and other advanced wirelesstransmission technology are adopted in the LTE system, flat network architecture and anall-IP system architecture to support the peak data rates of200Mbit/s over the maximum20MHz system bandwidth and shorter transmission delay significantly, improve thesystem throughput, so a stronger signal processing capability is needed on the user side.Thus in the stage of system development the entire baseband processor which is executedon a high-speed digital processor in the form of software development is of very practicalvalue and significanceSandbridge Technologies introduced its flexible multi-core SB3500basebandprocessor, any multi-mode multi-function mobile platform wireless protocol can beexecuted on this platform, and physical layer task is treated on three of its four-thread DSPcores. This paper studies the SB3500processor platform architecture and LTE UEbaseband processing platform.First introduce the basic concept of the LTE physical layer and some of the keyphysical layer technologies, meanwhile analysis the AMBA protocol.This can providebasic theoretical knowledge of SB3500baseband processor platform algorithm.Followed by a brief introduction of SB3500chip features and software developmentprinciples and development process.Finally, combining the advantages of the SB3500processor in the algorithmimplementation, assessment of the LTE algorithm module, analysis of the pros and consbased on the platform. Simulations show that the performance of the algorithm based onthe platform have improved significantly.更多还原