在WCDMA中基帶成形濾波器的設(shè)計(jì)

論文編號(hào):TX422  論文字?jǐn)?shù):18161,頁(yè)數(shù):41  附任務(wù)書(shū)，開(kāi)題報(bào)告，外文翻譯

摘 要

 WCDMA技術(shù)已經(jīng)普遍在全球范圍內(nèi)進(jìn)行使用。針對(duì)WCDMA的相關(guān)技術(shù)的發(fā)展也越來(lái)越顯重要。然而WCDMA技術(shù)并不完美，碼間干擾就是其缺點(diǎn)之一。
 首先，本論文對(duì)第三代移動(dòng)通信進(jìn)行了討論，介紹了WCDMA移動(dòng)通信系統(tǒng)的發(fā)展以及我國(guó)第三代移動(dòng)通信的研究情況；講述了基帶成形技術(shù)和數(shù)字濾波技術(shù)；重點(diǎn)針對(duì)WCDMA系統(tǒng)中存在的碼間干擾的問(wèn)題，提出以成形濾波器來(lái)解決的方案。鑒于MATLAB的強(qiáng)大功能，本文分別用窗函數(shù)法、雙線(xiàn)性變換法、升余弦直接設(shè)計(jì)法和FDAtool法等方法來(lái)實(shí)現(xiàn)基帶成形濾波器。最后基于MATLAB對(duì)各種方法進(jìn)行比較，分析各個(gè)方法的特點(diǎn)，得出最佳的設(shè)計(jì)方法。
 
關(guān)鍵詞：WCDMA，基帶成形技術(shù)，數(shù)字濾波器
ABSTRACT

 WCDMA technology has generally conducted on a global scale use. The WCDMA technology for the development is more and more important. WCDMA technology is not perfect, however, the code of the interference is one of its shortcomings.     First, the article on third generation mobile communications were discussed on the WCDMA mobile communication systems and the development of China's third generation mobile communications research；the paper discussed on forming a base-band filter technology and digital filtering technology；the code of interference and its solution were discussed.It is proposed to form a filter paper for the WCDMA solution to solve the communication system in the code of the interference problem. In view of the power of MATLAB,the design of methods used to achieve a window function,bilinear transformation, directly or cosine law FDAtool design and methods. Finally that is based on MATLAB on various methods to be compared and analyzed the characteristics of the various methods, that the best design methods.
 
KEY WORDS :WCDMA,Baseband forming technology,Digital Filter

目 錄

第一章  前言 1
1.1 WCDMA技術(shù)發(fā)展 1
1.2 基帶成形濾波器設(shè)計(jì)方法的發(fā)展 1
1.3 本課題研究的意義、技術(shù)要求和主要內(nèi)容 2
第二章  WCDMA概論 3
2.1 第三代移動(dòng)通信系統(tǒng)的發(fā)展 3
2.1.1 概述 3
2.1.2 WCDMA移動(dòng)通信系統(tǒng) 3
2.1.3 WCDMA的發(fā)展 4
2.1.4 我國(guó)第三代移動(dòng)通信的研究情況 4
2.2 WCDMA技術(shù)特點(diǎn) 5
2.2.1 3G各種技術(shù)比較 5
2.2.2 WCDMA系統(tǒng)的技術(shù)特點(diǎn) 5
2.3 WCDMA的技術(shù)指標(biāo)要求 7
第三章  基帶成形濾波器的關(guān)鍵技術(shù) 9
3.1 基帶成形技術(shù) 9
3.1.1 碼間干擾 9
3.1.2 碼間干擾的克服 9
3.1.3 基帶成型濾波器設(shè)計(jì) 10
3.2 數(shù)字濾波技術(shù) 11
3.2.1 數(shù)字濾波器概念 11
3.2.2 數(shù)字濾波器的分類(lèi) 11
3.2.3 FIR濾波器的結(jié)構(gòu) 12
3.2.4 FIR濾波器的設(shè)計(jì)方法 17
第四章  在WCDMA中基帶成形濾波器的MATLAB實(shí)現(xiàn) 25
4.1 MATLAB簡(jiǎn)介 25
4.2 設(shè)計(jì)的基本步驟 25
4.3 性能指標(biāo) 26
4.4 窗函數(shù)設(shè)計(jì)法 27
4.4.1 程序及仿真圖 27
4.4.2 小結(jié) 28
4.5 雙線(xiàn)性變換法 28
4.5.1 程序及仿真圖 28
4.5.2 小結(jié) 29
4.6 基于升余弦法直接設(shè)計(jì)FIR數(shù)字濾波器 29
4.7 FDATOOL的實(shí)現(xiàn) 30
4.8 本章小結(jié) 36
結(jié) 論 37
致 謝 38
參考文獻(xiàn) 39