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lte系统中信道编码的研究及turbo码的实现,lte系统中信道编码的研究及turbo码的实现1.83万字自己原创的毕业论文，仅在本站独家出售，重复率低，推荐下载使用摘要随着现代通信技术的发展，用户对高效、高可靠性数字通信系统的需求越来越大。因此，设计人员们纷纷开动，要在系统功率和传输带宽有限、系统复杂性和成本尽可能小的条件下，实现信息尽可能准确的传输。3gpp提出...
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LTE系统中信道编码的研究及Turbo码的实现
1.83万字
自己原创的毕业论文，仅在本站独家出售，重复率低，推荐下载使用
摘要 随着现代通信技术的发展，用户对高效、高可靠性数字通信系统的需求越来越大。因此，设计人员们纷纷开动，要在系统功率和传输带宽有限、系统复杂性和成本尽可能小的条件下，实现信息尽可能准确的传输。3GPP提出的LTE技术，具有系统传输延迟低、数据传输速率高、频谱利用率高以及设备成本的相对低廉的优点，现已被广泛采用并投入运营。虽然LTE中Turbo码的标准已经制定，但人们对于信道编码的研究和Turbo码的研究从未停止。因为在通信系统、尤其是当代高速、高可靠性要求的通信系统中，作为能消除或降低的信息传输错误概率的有效手段的信道编码，其地位的重要不言而喻。
本文首先概述了LTE系统及其关键技术，对MIMO技术和OFDM技术作了简要介绍，同时，给出LTE选用Turbo码作为数据信道编码的理由；然后，详细解说了信道编码和Turbo码的原理，包括数字通信系统模型的分析、信道编码的原理与重要性以及Turbo码的原理与优势，对上文LTE对Turbo码的采用给出原理上的支持；其次，详细说明了Turbo译码的常用算法，包括MAP算法及其演化算法（包括Log-MAP算法和Max-Log-MAP算法）和SOVA算法，并对各译码算法性能进行了比较，同时对各算法性能的影响因素做出分析对比，得出算法怎样设计能获得最大效益的结论；
最后，在系统仿真部分，先按照一般FPGA设计的流程，依据Turbo码编译码器的原理，设计思路，选择适当的工具软件（Quratus II）和编程语言（Verilog HDL），通过对RSC模块、交织器、反交织器等模块的设计、编写与综合，并在Modelsim上调试仿真运行，通过波形观察结果，并验证，最终实现Turbo码编码器和译码器的设计，验证其可行性。
关键字 LTE 信道编码 Turbo码 MAP SOVA FPGA
Research of LTE systems channel coding and implementation of Turbo Codes
Abstract With the development of modern communication technology, user's demand for efficient, high-reliability digital communication systems is growing. Therefore, the designers did all they can to achieve accurate transmission of information with the limitation of system power and bandwidth when the system complexity and cost should be as little as possible. The LTE technology 3GPP presents, has been widely adopted and put into operation, with the advantage of low system transmission delay, high data transfer rate, high spectrum efficiency and relatively low equipment cost. Although the standard in LTE Turbo codes have been developed, the study and research of channel coding and Turbo codes never stopped. For the channel coding plays an important role as an effective means to eliminate or reduce the transmission error probability of the information in the communication system, especially in modern high-speed, high-reliability communication system.
This paper begins with an overview of the LTE system and its key technology, MIMO technology and the OFDM technology, are briefly introduced, and a reason is given for the selection of Turbo codes as the data channel coding code in the LTE. Then, a detailed explanation of the principle of channel coding and Turbo codes is given, including the analysis of digital communication system model and the importance of the principle of channel coding and the principles and advantages of turbo codes ,which will strongly support the chosen of adoption of turbo codes in the LTE system as proposed above. After that, the paper details the commonly used algorithms for turbo decoding, including MAP algorithm and its evolutionary algorithms(Log-MAP algorithm and MAX-Log-MAP algorithm), and the SOVA algorithm. It also compares the performance of various decoding algorithms, and the impact of various factors on the performance of the algorithms. Then, a conclusion is made on how to get the largest advantage.
Finally, in the system simulation section, first as a general FPGA design process, according to the turbo coding principles, we design ideas, select the appropriate tool (Quartus II) and the programming languages (Verilog HDL), and through the RSC module, interleaver anti-interleaver design modules, the preparation and synthesis, simulation and debug run on Modelsim, through waveform observation and verification, and ultimately realize the design of turbo code encoder and decoder.
Keyword LTE channel coding turbo codes MAP SOVA FPGA
目录
第一章 概论 1
1.1 通信系统的发展与信道编码的研究意义 1
1.1.1 通信系统的发展 1
1.1.2 信道编码的研究意义 1
1.2 信道编码的发展历程和Turbo码研究现状以及发展趋势 1
1.2.1 信道编码的发展历程 1
1.2.2 Turbo码的研究现状及发展趋势 1
1.3 本文的研究内容 1
第二章 LTE系统中信道编码的研究 1
2.1 LTE系统 1
2.1.1 LTE系统简介 1
2.1.2 LTE系统的关键技术 1
2.2 信道编码 1
2.2.1 信道编码简介 1
2.2.2 Turbo码 1
第三章 LTE系统译码算法的分析 1
3.1 Turbo译码的常用算法 1
3.1.1 MAP族算法 1
3.1.2 SOVA算法 1
3.2 各算法性能对比 1
3.3 Turbo码算法影响因素 1
3.3.1 分量码 1
3.3.2 迭代次数 1
3.3.3 信息序列长度 1
第四章 LTE系统中Turbo码的实现 1
4.1 前期准备 1
4.1.1 设计思路 1
4.1.2 工具软件简介 1
4.1.3 编程语言 1
4.2 编码器设计 1
4.2.1 整体设计 1
4.2.2 RSC分量编码器 ..
1.83万字
自己原创的毕业论文，仅在本站独家出售，重复率低，推荐下载使用
摘要 随着现代通信技术的发展，用户对高效、高可靠性数字通信系统的需求越来越大。因此，设计人员们纷纷开动，要在系统功率和传输带宽有限、系统复杂性和成本尽可能小的条件下，实现信息尽可能准确的传输。3GPP提出的LTE技术，具有系统传输延迟低、数据传输速率高、频谱利用率高以及设备成本的相对低廉的优点，现已被广泛采用并投入运营。虽然LTE中Turbo码的标准已经制定，但人们对于信道编码的研究和Turbo码的研究从未停止。因为在通信系统、尤其是当代高速、高可靠性要求的通信系统中，作为能消除或降低的信息传输错误概率的有效手段的信道编码，其地位的重要不言而喻。
本文首先概述了LTE系统及其关键技术，对MIMO技术和OFDM技术作了简要介绍，同时，给出LTE选用Turbo码作为数据信道编码的理由；然后，详细解说了信道编码和Turbo码的原理，包括数字通信系统模型的分析、信道编码的原理与重要性以及Turbo码的原理与优势，对上文LTE对Turbo码的采用给出原理上的支持；其次，详细说明了Turbo译码的常用算法，包括MAP算法及其演化算法（包括Log-MAP算法和Max-Log-MAP算法）和SOVA算法，并对各译码算法性能进行了比较，同时对各算法性能的影响因素做出分析对比，得出算法怎样设计能获得最大效益的结论；
最后，在系统仿真部分，先按照一般FPGA设计的流程，依据Turbo码编译码器的原理，设计思路，选择适当的工具软件（Quratus II）和编程语言（Verilog HDL），通过对RSC模块、交织器、反交织器等模块的设计、编写与综合，并在Modelsim上调试仿真运行，通过波形观察结果，并验证，最终实现Turbo码编码器和译码器的设计，验证其可行性。
关键字 LTE 信道编码 Turbo码 MAP SOVA FPGA
Research of LTE systems channel coding and implementation of Turbo Codes
Abstract With the development of modern communication technology, user's demand for efficient, high-reliability digital communication systems is growing. Therefore, the designers did all they can to achieve accurate transmission of information with the limitation of system power and bandwidth when the system complexity and cost should be as little as possible. The LTE technology 3GPP presents, has been widely adopted and put into operation, with the advantage of low system transmission delay, high data transfer rate, high spectrum efficiency and relatively low equipment cost. Although the standard in LTE Turbo codes have been developed, the study and research of channel coding and Turbo codes never stopped. For the channel coding plays an important role as an effective means to eliminate or reduce the transmission error probability of the information in the communication system, especially in modern high-speed, high-reliability communication system.
This paper begins with an overview of the LTE system and its key technology, MIMO technology and the OFDM technology, are briefly introduced, and a reason is given for the selection of Turbo codes as the data channel coding code in the LTE. Then, a detailed explanation of the principle of channel coding and Turbo codes is given, including the analysis of digital communication system model and the importance of the principle of channel coding and the principles and advantages of turbo codes ,which will strongly support the chosen of adoption of turbo codes in the LTE system as proposed above. After that, the paper details the commonly used algorithms for turbo decoding, including MAP algorithm and its evolutionary algorithms(Log-MAP algorithm and MAX-Log-MAP algorithm), and the SOVA algorithm. It also compares the performance of various decoding algorithms, and the impact of various factors on the performance of the algorithms. Then, a conclusion is made on how to get the largest advantage.
Finally, in the system simulation section, first as a general FPGA design process, according to the turbo coding principles, we design ideas, select the appropriate tool (Quartus II) and the programming languages (Verilog HDL), and through the RSC module, interleaver anti-interleaver design modules, the preparation and synthesis, simulation and debug run on Modelsim, through waveform observation and verification, and ultimately realize the design of turbo code encoder and decoder.
Keyword LTE channel coding turbo codes MAP SOVA FPGA
目录
第一章 概论 1
1.1 通信系统的发展与信道编码的研究意义 1
1.1.1 通信系统的发展 1
1.1.2 信道编码的研究意义 1
1.2 信道编码的发展历程和Turbo码研究现状以及发展趋势 1
1.2.1 信道编码的发展历程 1
1.2.2 Turbo码的研究现状及发展趋势 1
1.3 本文的研究内容 1
第二章 LTE系统中信道编码的研究 1
2.1 LTE系统 1
2.1.1 LTE系统简介 1
2.1.2 LTE系统的关键技术 1
2.2 信道编码 1
2.2.1 信道编码简介 1
2.2.2 Turbo码 1
第三章 LTE系统译码算法的分析 1
3.1 Turbo译码的常用算法 1
3.1.1 MAP族算法 1
3.1.2 SOVA算法 1
3.2 各算法性能对比 1
3.3 Turbo码算法影响因素 1
3.3.1 分量码 1
3.3.2 迭代次数 1
3.3.3 信息序列长度 1
第四章 LTE系统中Turbo码的实现 1
4.1 前期准备 1
4.1.1 设计思路 1
4.1.2 工具软件简介 1
4.1.3 编程语言 1
4.2 编码器设计 1
4.2.1 整体设计 1
4.2.2 RSC分量编码器 ..
