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研究生:胡惠乾
研究生(外文):Hui-Chien Hu
論文名稱:LTE-A 下行傳輸渦輪碼軟體實現及效能分析
論文名稱(外文):Software Implemention and Performance Analysis of Turbo Code in LTE-Advanced Downlink Transmission
指導教授:劉玉蓀
口試委員:馬尚智白宏達
口試日期:2012-07-30
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:電腦與通訊研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:39
中文關鍵詞:LTE-A渦輪碼軟式決策通道編碼下行傳送端共享通道
外文關鍵詞:LTE-ATurbo Codesoft decisionchannel codingdownlink shared channel
相關次數:
  • 被引用被引用:4
  • 點閱點閱:201
  • 評分評分:
  • 下載下載:16
  • 收藏至我的研究室書目清單書目收藏:0
本論文在於模擬LTE-A實體層下行共享傳輸通道(Physical downlink shared channel),並針對渦輪碼(Turbo code)進行探討及分析。本文主要分為兩部分:第一部分是軟體實現下行傳送端共享傳輸通道及下行接收端共享傳輸通道,傳送端有渦輪碼編碼器(Turbo encoder)、速率匹配(Rate matching)、調變映射(Modulation mapping),而接收端有解調變映射(demodulation mapping)、解速率匹配(de-rate matching)及渦輪碼解碼器(Turbo decoder)。渦輪碼解碼器採用軟式決策(soft decision)的方式,其中解碼器採用最大事後機率演算法。在系統中,通道環境分別使用加成性白色高斯雜訊(Additive White Gaussian Noise;AWGN)通道及雷利衰減(Rayleigh fading)通道。第二部分則是針對LTE-A規格中下行共享通道的渦輪碼進行模擬探討。我們也依照規格書提供的碼塊長度、資源配置與調變,使用不同的通道環境,分別探討在固定碼塊長度下模擬不同資源配置的解碼效能影響及在固定資源配置大小下模擬不同碼塊長度的解碼效能影響。

The substance of this paper is simulating of LTE-A physical downlink shared channel, discussing and Analysis of Turbo code. We separate this paper into two parts. The first part of software implementation to downlink transmission shared transport channel and downlink receiver shared transport channel, the transmission of the turbo code encoder, rate matching and modulation mapping. The receiver of demodulation mapping, de-rate matching and the turbo code decoder. Turbo code decoder adopts soft- decision, the decoder adopts the maximum a posteriori probability algorithm. In the system, the channel environment used additive white Gaussian noise channel and Rayleigh fading channel. The second part, we discuss the downlink shared channel turbo code specifications for LTE-A.We provide in accordance with the specifications of the code block length resource allocation and modulation, the use of different channel environment respectively to explore the decoding performance impact of different allocation of resources in the fixed code block length and fixed resource allocation size ifferent code blocks, the length of the decoding performance is affected.

摘 要 .......................................................................................................................... i
ABSTRACT ................................................................................................................. ii
誌 謝 .......................................................................................................................... iv
目 錄 ............................................................................................................................v
表目錄 ........................................................................................................................ vi
圖目錄 ....................................................................................................................... vii
第一章 緒論.................................................................................................................1
第二章 LTE-A下行傳送端實體層共享傳輸通道 .......................................................3
2.1 渦輪碼 ............................................................................................................4
2.1.1 編碼器 .................................................................................................4
2.1.2 格子圖終止 .........................................................................................6
2.1.3 交錯器 .................................................................................................6
2.2 速率匹配 ........................................................................................................9
2.2.1 子區塊交錯器 ......................................................................................9
2.2.2 位元收集 ........................................................................................... 11
2.2.3 位元選擇與修剪 ................................................................................ 12
2.2.4 計算資源配置大小 ............................................................................ 13
2.3 調變映射 ...................................................................................................... 15
2.4 模擬通道模型 .............................................................................................. 17
第三章LTE-A下行接收端實體層共享傳輸通道 ...................................................... 19
3.1 解調變映射 .................................................................................................. 19
3.2 解速率匹配 .................................................................................................. 20
3.2.1 解位元選擇與修剪 ............................................................................ 21
3.2.2 位元分開 ........................................................................................... 22
3.2.3 子區塊解交錯器 ................................................................................ 22
3.3 渦輪碼解碼器 .............................................................................................. 23
第四章 效能分析 ....................................................................................................... 24
4.1 改變碼塊長度 .............................................................................................. 24
4.2 改變資源配置大小....................................................................................... 31
第五章 結論............................................................................................................... 38
參考文獻 .................................................................................................................... 39

[1] 3GPP TS 36.212, “Evolved Universal Terrestrial Radio Access(E-UTRA);Multiplexing and Channel Coding,”v.10.0.0,Jan.2011.
[2] 何友順,快速跳頻展頻通訊系統於多因頻干擾下比較摺積碼和渦輪碼的效能,碩士論文,國立臺北科技大學電腦與通訊研究所,台北,2010。
[3] 3GPP TS 36.211, “Evolved Universal Terrestrial Radio Access(E-UTRA);Physical channel and modulation,”v.10.0.0,Jan.2011.pp.97-99.
[4] 3GPP TS 36.101, “Evolved Universal Terrestrial Radio Access(E-UTRA);User Equipment(UE) radio transmission reception,”v.10.0.0,Jan.2011.pp.172-173.
[5] 3GPP TS 36.213, “Evolved Universal Terrestrial Radio Access(E-UTRA);Physical layer procedures,”v.10.0.0,Jan.2011.pp.31 -39.

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