姓名 |
黃敏瑞(Ming-Ruan Huang )
查詢紙本館藏 |
畢業系所 |
電機工程研究所 |
論文名稱 |
16QAM調變系統 (16 QAM Modulator)
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相關論文 | |
檔案 |
[Endnote RIS 格式]
[Bibtex 格式]
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摘要(中) |
本論文主要是要架設一套資料量為6MHz,載波為50MHz的16QAM調變器,是為了配合數位DTV在無線傳輸方面的應用。因數位DTV系統,其每個channel頻寬為6MHz,而其頻段由60MHz至800MHz皆有,並且以16QAM為調變的方式,每6MHz惟一個頻寬。因此規格為6MHz為頻寬,50MHz為載波頻段,本文在analog device公司出品的AD9853,以滿足本文所要求的規格。
而此顆IC為可程式化的,寫入的方式是藉由I2C通訊協定,由於這顆IC有許多的功能,包括Preamble,Randomizer,Reed-Solomom Encoder及FIR Digital Filter,其載波的頻段可調,data rate的速度可調等等,所以想要AD9853發射出什麼信號,就需要用I2C的方式來寫入。
為實現I2C通訊協定,本文採用了兩種方式,1. PIC(單晶片)來實現
2.電腦並列阜加上74系列的控制IC來實現。單晶片的傳輸速度較快,而電腦並列阜的傳輸速度則較慢。 |
摘要(英) |
Because people need more and more service in wireless communication,so we have to raise our frequency to fit these requirement。For example,DTV(digital television ) is a kind of system that uses 28GHz in wireless communication,and it has many channels in 50MHz~900MHZ,each channel has 6MHZ data rate。The modulator for DTV is 16 QAM,and aspect of this thesis is 16 QAM modulator。
We use a chip is analog device AD9853,for this purpose,It's Function include : Preamble , Reed-Solomom Encoder,Randomizer,16 QAM Modulation and FIR Digital Filter。We setup it according to its and program it by I2C communication algorithm which uses PIC(peripheral interface controller) and parallel port to implement 。 |
關鍵字(中) |
★ 調變 |
關鍵字(英) |
★ 16QAM ★ modulation ★ modulator |
論文目次 |
前言…………………………………………………………I
摘要………………………………………………………II
目錄………………………………………………………III
第一章緒論 …………………………………………………………1
1.1研究動機與目的…………………………………………1
1.2 章節介紹 ………………………………………………2
第二章發射器系統架構 …………………………………4
2.1 16QAM調變器…………………………………………… 4
2.2 低通濾波器………………………………………………9
2.3 I2C通訊協定……………………………………………10
第三章 系統製作測試與分析……………………………… 21
3.1 16QAM無線傳輸系統……………………………………21
3.2 I2C之通訊協定…………………………………………32
3.3 濾波器之量測 …………………………………………45
第四章 結論…………………………………………………48
參考文獻………………………………………………………………49 |
參考文獻 |
[01] Analog Device,Programmable Digital QPSK/16-
QAM Modulator
[02] AD9853-45/65 PCB (Rev C) Evaluation Board
and Software Instructions and Notes (June 8,1998)
[03] A noncoherent Coded modulation for 16QAM
Pingyi Fan; Xiang-Gen Xia
Military Communication Conference
Proceeding, 1999. MILCOM 1999.IEEE
Volume: 1, 1999, pages: 301~305 vol1.1
[04] MOTOROLA MC74AC244 Octal Buffer/Line Drive With 3-state Output
[05] MOTOROLA MC74ACT579 Octal D-type Latch With
3-State Buffer
[16] On differential encoded star 16QAM with
differential detection and diversity
svensson,N,A,B
Vehicular Technology, IEEE Transactions on
Volume: 443,AUG 1995,pages:586~593
[07] Diversity for star 16QAM on fading channel
svensson, A
Personal,Indoor and Mobile Radio Communications,
1995,PIMRC'95. Wireless: Merging onto the
Information Superhighway. Sixth IEEE
International Symposium On Volume: 3, 1995,
Pages: 1267
[08] Microchip ,Use of The SSP Module In The I2C
Multi-Master Environment
[09] Microchip,PICMASTER EMULATOR User's Guide
[10] Microchip,MPLAB-ICE User's Guide
[11] HP89441 Vector Analysis User's Guide
[12] HP8595 Spectrum Analysis User's Guide
[13] HP54616 Oscilloscope User's Guider
[14] ATMEL,2-wire Serial EEPROM
[15] Philips semiconductor ,The I2C-Bus
Specification Version 2.1
[16] Microchip 18-pin Flash/EEPROM 8-bit
Micro controllers,PIC16F873 |
指導教授 |
蔡木金(Mu-King Tsay)
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審核日期 |
2001-6-19 |
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