非正交多重接取之預編碼在多輸入多輸出系統效能分析

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姓名

邱新堯(Hsin-Yao Chiu) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

非正交多重接取之預編碼在多輸入多輸出系統效能分析
(Performance Analysis of MIMO with Precoding in Non-Orthogonal Multiple Access (NOMA) Systems)

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摘要(中)

在本篇論文中，我們主要專注在多輸入多輸出的非正交多重接取系統環境下，進行效能評估，使用的強制歸零預編碼Zero-Forcing (ZF)和最小均方誤差預編碼Minimum Mean Square Error (MMSE) 。因此，本文希望去探討不同預編碼在完美通道和具通道估測錯誤情況下，進行效能評估。利用預編碼可使用來降低干擾的程度，經過預編碼可以提升系統吞吐量 (capacity)。在模擬結果中進行比較並分析，提出不同形況下預編碼的選擇和使用。

摘要(英)

In this thesis, we studied the performance of zero-forcing (ZF) and minimum mean square error (MMSE) precoding of Multiple Input Multiple Output (MIMO) in Non-orthogonal multiple access (NOMA) systems. The effect of channel estimation is considered. Therefore, we evaluate the performance with different precoding methods with perfect and imperfect channel estimation. While using precoding to suppress the interference, the sum capacity is improved. Finally, we suggest one precoding method to offer better sum capacity in choosing one of different precoding methods by comparing the performance of simulation results.

關鍵字(中)

★ 多輸入多輸出系統
★ 非正交多重接取
★ 預編碼

關鍵字(英)

論文目次

Contents
論文摘要 I
Abstract II
致謝 III
Contents IV
List of Figures V
List of Tables VI
1. Introduction 1
1.1 Multiple Input Multiple Output (MIMO) 1
1.2 Non-orthogonal multiple access (NOMA) 2
1.3 Zero-forcing (ZF) precoding and Minimum mean square error (MMSE) precoding 3
1.4 Organization 4
1.5 Notation 4
1.6 Abbreviations 5
2. System Model 6
2.1 Zero-forcing BF in the NOMA-BFsystem 8
2.2 Received SINR wth zero-forcing 9
2.3 Minimum mean square error BF in the NOMA-BFsystem 11
2.4 Received SINR wth minimum mean square error 12
2.5Problem formulation 14
3. Performance in NOMA system of channel estimation error 16
3.1 Estimated channel with ZF 16
3.2 Estimated channel with MMSE 18
4. Simulation Results 20
5. Conclusion 26
6. Reference 27
List of Figures
Fig. 1.1. MIMO system model 1
Fig. 2.1. NOMA-BF downlink system 6
Fig. 4.1. The different users performance compare by the ZF v.s.MMSE. 21
Fig. 4.2. The sum capacity growth rate in low SNR. 22
Fig. 4.3. The sum capacity growth rate in high SNR. 22
Fig. 4.4. The performance by using the estimated channel. 23
Fig. 4.5. The performance by using the estimated channel for ZF and MMSE. 24
Fig. 4.6. The performance of using the estimated channel for various the SNR. 25
Fig. 4.7. T The performance of using the estimated channel only for ZF and MMSE. 25

?
List of Tables
Table 4.1 The Parameters for NOMA downlink system simulation 19

參考文獻

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指導教授

陳永芳(Yung-Fang Chen)

審核日期

2017-1-16

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