張進福Chang, Jin-Fu臺灣大學:電信工程學研究所范宇承Fan, Yu-ChengYu-ChengFan2010-07-012018-07-052010-07-012018-07-052009U0001-2407200915034700http://ntur.lib.ntu.edu.tw//handle/246246/188337多輸入/多輸出正交分頻載波多工系統擁有訊號分集(diversity)、有效抵抗ISI等優點，因此被現今各大無線通訊標準所採用。本論文探討將第二根天線傳送訊號相位修正(星座圖上)，接收端是否可應用此已知資訊來降低系統傳輸位元錯誤率。本論文將針對MMSE等化器及Matched filter兩種接收器提出傳送端預先相位最佳修正角度。最後並將提出傳送及接收方式運用於高速移動環境下，探討在有通道估測誤差情況下，相位修正方法是否仍能改善傳輸位元錯誤率。There are many advantages for MIMO OFDM system, like spatial diversity, frequency diversity, ISI resistant…and so on. MIMO OFDM has become a key feature for Many communication standards(WiMAX LTE WiFi). From this paper, we want to investigate that while we rotate the phase of signal, whether or not the design will lead to batter BER. We try to find optimal phase shift for two receiver, MMSE equalizer and Matched filter. At last, we apply our designs in high speed environment.口試委員會審定書..........................................i謝.....................................................ii文摘要................................................iiiBSTRACT.................................................ivhapter 1 簡介正交分頻多工系統( Orthogonal Frequency Division Multiplexing,OFDM ) 及多重輸入多重輸出系統(Multiple Input Multiple output,MIMO).1 前言.............................................1.2 OFDM架構及簡介...................................3.3 MIMO架構及簡介...................................7.3.1 MIMO CHANNEL.....................................7.3.2 空間多工( Spatial Multiplexing ).................9.3.3 空間分集 ( Spatial Diversity )...................9.3.4 天線系統 ( Antenna Systems )....................13.4 MIMO AND OFDM...................................14.4.1 MIMO STANDARDS..................................15.5 通訊標準(Standardization).......................16.5.1 WLAN IEEE 802.11n...............................16.5.2 WiMAX IEEE 802.16-2004..........................17.5.3 WiMAX IEEE 802.16e ..............................18.5.4 3GPP Release 7..................................19.5.5 3GPP Release 8(LTE).............................19.6 本章小結........................................20.7 本論文架構......................................20hapter 2 角度迴授(angle feedback)運用於空間分集(spatial diversity)之位元錯誤率(BER)分析.1 前言............................................21.2 最小均方誤差等化器(MMSE Equalizer)簡介..........21.2.1 MIMO 運用MMSE等化器錯誤率分析...................21.3 COST259 通道模型................................23.4 MIMO OFDM運用MMSE接收器下位元錯誤率分析.........29.5 本論文研究動機..................................34.6 接收端運用MMSE等化器子載波最佳相位修正角度分析 ................................................40.6.1 系統架構........................................40.6.2 數學推導........................................41.6.3 模擬結果........................................45.7 本章結論........................................46hapter 3 角度迴授(Angle Feedback)及相位修正(Phase Correction)運用Matched filter的錯誤率分析.1 前言............................................47.2 Alamouti Space Time Block Code..................47.2.1 傳統MRRC(Maximal Ratio Receive Combining)架構...48.2.2 2x1 Alamouti Space Time Block Code..............50.2.3 2x2 Alamouti Space Time Block Code..............52.2.4 Alamouti 及 MRRC錯誤率比較......................54.3 Matched filter運用相位修正效能分析..............55.3.1 系統架構........................................56.3.2 數學推導........................................56.3.3 模擬結果........................................58.4 本章小結........................................60hapter 4 將角度迴授及相位修正運用於spatial multiplex及通道 部分已知環境下效能分析.1 前言............................................61.2 空間多工架構，Match filter最佳相位修正角度分析 ................................................61.2.1 系統架構及數學推導 ..............................61.2.2 模擬結果........................................64.3 相位修正方法運用於實際環境錯誤率分析............65.3.1 MMSE等化器加入相位修正運用於實際環境錯誤率分析 ................................................65.3.2 Matched Filter運用相位修正於實際通道錯誤率分析 ................................................69.4 本章結論........................................70hapter 5 總結.1 前言............................................72.2 各章節論........................................72.3 未來可能延伸方向................................73EFERENCE ................................................743002736 bytesapplication/pdfen-US多輸入多輸出系統正交分頻載波多工角度迴授相位修正MIMOOFDMAngle FeedbackPhase Correctionthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/188337/1/ntu-98-R96942093-1.pdf