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Title: | 接收端波束成型技術下之上行時反多工系統之通道估測訓練序列設計 Training Sequence Design for Channel Estimation in Uplink TRDMA System with Receive Beamforming |
Authors: | Ming-Hsuan Kao 高旻暄 |
Advisor: | 蘇柏青 |
Keyword: | 接收端波束成型,通道估計,訓練序列,TRDMA,上行, receive beamforming,channel estimation,training sequence,TRDMA,uplink, |
Publication Year : | 2016 |
Degree: | 碩士 |
Abstract: | 在這篇論文當中,我們探討在一個在 TRDMA 系統並且加上接收端 波束成型的技術下的通道估計技術。我們提出了該如何替這系統設計 一個良好訓練序列的問題也提出了機第台該做怎樣的訓練序列分配給 底下的使用者使用,並且透過適當的分配,讓訓練序列多用戶間干擾 的行動通訊網路在大規模天線陣列上行系統下對空間做出切割,藉此 能讓用戶間的干擾能夠降低,通道估測的偏差值也能減小。我們藉由 空間的切割,並且去對訓練序列訊號做適當的分配給底下的用戶使用。 如此希望能達到既能重複的使用相同的訓練序列訊號資源也能讓用戶 間的干擾不不至於太過嚴重,進而甚至可以容納更多的使用者在同一 時間下做通道估計。模擬結果顯示出,我們提出的方法相對於以往的 訓練序列訊號分配方法能讓通道估測偏差值降低,在基地台估測出通 道後得到通道的資訊,我們更進一步的去模擬一個上行傳輸系統,藉 此比較通道估測的偏差值對於傳輸的錯誤率有什麼樣的關係以及影響, 讓我們的通道估計技術讓 TRDMA 的技術更加穩固。 This thesis is focus on the channel estimation of TRDMA system with receive beamforming. We address the problem of how to design a good train- ing sequence for this system and also address the problem that how BS could make a good training sequence assignment so that the multi-user interference (MUI) by way of the limitation resource of training sequence could be re- duce and mitigate. Our proposed method appropriately arranged the training sequence for users and make a good decision that some training sequence re- source could be reuse. This could be accommodate more and more users to estimate the channel in the same time. Simulation results show that the pro- posed method can reduce the channel estimation error than randomly assign sequence and the performance gap is clear to see when the number of user grow up. In the final, we further construct the uplink TRDMA transmission with receive beamforming, and simulate the BER. The performance of our proposed method is still better than randomly assign the training sequences and further verify that the concept of TRDMA system is more promising in the future. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/51062 |
DOI: | 10.6342/NTU201600326 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 電信工程學研究所 |
Files in This Item:
File | Size | Format | |
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ntu-105-1.pdf Restricted Access | 1.59 MB | Adobe PDF |
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