單載波分頻多工(Single Carrier Frequency Division Multiple Access, SC-FDMA)系統有正交分頻多工(Orthogonal Frequency Division Multiple Access, OFDMA)的對抗多重路徑衰減的特性，同時具有低峰均值功率比(Peak-to-Average Power Ratio, PAPR)的優點，然而，當結合空頻區塊編碼(Space-Frequency Block Coding, SFBC)之多重輸入多重輸出(Multiple-Input Multiple-Output, MIMO)技術後，雖可提高空間多樣性(Spatial Diversity)，但亦會提高峰均值功率比，導致功率放大器的成本提高。本論文提出了兩個降低峰均值功率比的架構，分別在頻域和時域產生候選訊號。這兩個架構都不會破壞空頻區塊編碼的正交性，同時並不需額外傳送旁訊息(Side Information, SI)至接收端。電腦模擬的結果顯示，提出的方法能有效降低峰均值功率比，此外，其位元錯誤率能夠貼近完美已知旁訊息的系統效能。

The single carrier frequency division multiple access (SC-FMDA) system has similar features as the orthogonal frequency division multiple access (OFDMA) system, which is robust to the multipath fading channel. In addition, a low peak-to-average power ratio (PAPR) is another advantage of the SC-FDMA system. To increase spatial diversity, the SC-FDMA system is combined with the multiple-input multiple-output (MIMO) system with space-frequency block coding (SFBC). Thus, the PAPR is increased, and the efficiency of the power amplifier is degraded. In this thesis, two PAPR reduction schemes without side information are proposed for the SFBC SC-FDMA system, where the candidate signals are generated in the frequency and time domains. The orthogonality of the SFBC is maintained in both schemes. In addition, transmitting any side information to the receiver is not required. Simulation results show that the proposed schemes can reduce the PAPR well, and the bit error rate of the proposed schemes is close to that of the case in which the side information (SI) is perfectly known at the receiver without any detection performed.

論文審定書 i
誌謝 ii
中文摘要 iii
Abstract iv
目錄 v
圖次 vii
表次 viii
第一章 導論 1
1.1 研究背景 1
1.2 研究動機 2
1.3 論文架構 3
第二章 系統架構 4
2.1 SC-FDMA 4
2.2多重輸入多重輸出與空頻區塊編碼 5
2.3 峰均值功率比 8
第三章 傳統降低PAPR的方法 10
3.1 常見降低PAPR的方法 10
3.2傳統SLM架構 12
第四章 不具旁訊息傳送的降低PAPR架構 14
4.1頻域上產生候選訊號的架構 14
4.2時域上產生候選訊號的架構 19
4.3 旁訊息的偵測 24
第五章 效能模擬分析 25
5.1 複雜度的比較 25
5.2 PAPR效能的比較 27
5.3 旁訊息的偵錯率 30
5.4 系統的錯誤率 32
第六章 結論 34
參考文獻 35
中英對照表 41
全名縮寫對照表 44

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