臺灣博碩士論文加值系統

本研究發展出一套包含數位與類比之混合式預編碼，其適用於多用戶多輸入單輸出（MISO）毫米波通道之廣播通訊。我們利用髒紙編碼(DPC) 與迫零髒紙編碼(ZFDPC)的技巧直接去設計混合式結構，在假設基地台知道完整通道資訊的情況下，能夠在傳送之前有效率地將干擾消除，便可利用廣播通道與多重存取通道之對偶特性，考慮能量分配來最大化容量以得到更好的總傳送速率。此外我們發現隨著的射頻鏈(RF chain)數量上升，混合式架構產生的效能會趨近傳統的全數位架構。實驗結果顯示我們提出的方法所能達到的效能比近來發表的方法來的好。

This thesis develop new hybrid precoding for downlink mmWave multi-user MISO systemswhich include baseband precoder(digital) and RF precoder(analog).We use dirty paper coding and zero forcing dirty paper coding skill to design indirectly by modifying hybrid structure.Assume that channel station information at base station is known perfectly so that the interference can be canceled efficiently before transmission.Therefore, consider the problem of maximizing the capacity and apply broadcast channel - multiple access channel duality to reformulate
objective problem and get better sum rates.Besides, we find that with the more RF chains, the performance of hybrid structure will approach to traditional fully digital.Simulation results showed that our proposed hybrid precoding scheme achieve better sum rates than other recently published.

摘要 i
Abstract ii
Acknowledgement iii
Table of Contents iv
List of Figures vi
1 Introduction 1
1.1 Background 1
1.2 Motivation 2
1.3 Thesis Outline and Statement of Contribution 2
1.4 Notation 2
2 mmWave MU-MISO System 4
2.1 System Model 4
2.2 Channel Model 5
3 Recent Works on Hybrid Precoding 7
3.1 Prior Research 7
3.2 Problem Formulation 8
4 Proposed Coding Scheme for Downlink MU-MISO Systems 11
4.1 Fully Digital DPC 12
4.2 Fully Digital ZFDPC 14
4.3 Hybrid Structure 15
4.4 Hybrid: DPC 16
4.5 Hybrid: ZFDPC 19
4.6 Summary 20
5 Simulation and Discussion 25
5.1 Simulation Environment 25
5.2 Simulation Results 25
6 Conclusions 33
References 34

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