رسالة جامعية
Adaptive Equalizers of MIMO STBC-CP-OFDM Systems by Block RLS Approaches
| العنوان: | Adaptive Equalizers of MIMO STBC-CP-OFDM Systems by Block RLS Approaches |
|---|---|
| العنوان البديل: | Block RLS演算法於MIMO STBC CP-OFDM系統之適應性等化器研究 |
| المؤلفون: | Hung, Chun-Hao, 黃俊皓 |
| مرشدي الرسالة: | Chang, Lena, 張麗娜 |
| سنة النشر: | 2017 |
| المجموعة: | National Digital Library of Theses and Dissertations in Taiwan |
| الوصف: | 105 The combination of MIMO, STBC, CP and OFDM techniques, called the MIMO STBC CP-OFDM system, has becomes one of standards in the fourth-generation (4G) mobile wideband communication.Communication systems in recent years to achieve higher transfer efficiency and multiuser multiple input multiple output technique (Mutiuser-MIMO) has also matured, this thesis will design the equalizer in frequency domains and adaptive equalizer in multiuser MIMO STBC CP-OFDM wireless transmission systems. In this research is using Least Square Error (LSE) and Least Mean Square (LMS) two methods and combining the forward and backward sample data, to designs the LSE equalizer, Wiener equalizer, and forward-backward Wiener equalizer in the frequency domains.Then considered the multi-users in the real channel environment, characteristics of the channel changed over time, by Block Recursive Least Square (BRLS) the calculating method renewal weight matrix design adaptive equalizer, and combine the forward receive signal and reverse receive signal, are proposing Forward-Only Block Recursive Least Square (FO-BRLS) adaptive equalizer and Forward-Backward Block Recursive Least Square (FB-BRLS) adaptive equalizer. Finally, in order to enhance the efficiency of channel capacity using, joins the decision device under the unknown transmission signal condition to renew the matrix of weight in equalizer, and combines the forward and backward sample data to propose DD-FOBRLS blind equalizer and DD-FBBRLS blind equalizer. The simulation result showed this research proposed the FB-BRLS adaptive equalizer all is more superior than the FO-BRLS adaptive equalizer and the Wiener equalizer in the convergence rate as well as return to original state signal ability. But under the time-variable environment, FB-BRLS and the FO-BRLS adaptive equalizer can achieve the immediate signal demodulation compared to the Wiener equalizer . |
| Original Identifier: | 105NTOU5300016 |
| نوع الوثيقة: | 學位論文 ; thesis |
| وصف الملف: | 60 |
| الإتاحة: | http://ndltd.ncl.edu.tw/handle/mq9934Test |
| رقم الانضمام: | edsndl.TW.105NTOU5300016 |
| قاعدة البيانات: | Networked Digital Library of Theses & Dissertations |
| الوصف غير متاح. |