本文主要是設計和實現IEEE 802.15.4規範中2.45GHz模式的基頻部分，文章開始會介紹IEEE 802.15.4無線近身網路的特色，還有針對規範定義的物理層和媒體存取層做介紹，然後根據規範中的定義我們設計2.45GHz模式的基頻部分的收發機結構，然後撰寫硬體描述語言，再利用FPGA板和邏輯分析儀來驗證收發機演算法的可行性。

The baseband part of IEEE 802.15.4 operated in 2.45 GHz mode is designed and implemented in this essay. First, the features of IEEE 802.15.4 WPAN(Wireless Personal Area Network), PHY layer and MAC Layer are introduced. Then the algorithm and VHDL of the baseband part of transceiver are designed and verified by FPGA board and logical analyzer.

致謝.................................................................................................................................i
中文摘要........................................................................................................................ii
英文摘要.......................................................................................................................iii
目錄...............................................................................................................................iv
圖索引..........................................................................................................................vii
表索引............................................................................................................................x
第一章　序論..............................................................................................................01
1.1　導論.................................................................................................................01
1.2　研究動機與論文架構簡述.............................................................................02
第二章　IEEE802.15.4通訊協定概述.......................................................................03
2.1　IEEE 802.15.4特色及簡介.............................................................................03
2.1.1　低成本和低功率耗損的特色..................................................................03
2.1.2　IEEE 802.15.4其他重要的特性..............................................................04
2.1.2.1　網路裝置和拓墣...............................................................................04
2.1.2.2　通道接取...........................................................................................05
2.1.2.3　認可通道估定...................................................................................06
2.2　實體層介紹.....................................................................................................06
2.2.1　實體層資料處理參數..............................................................................06
2.2.2　868/915MHz模式模式實體層標準........................................................07
2.2.2.1　資料傳輸率.......................................................................................07
2.2.2.2　差分編碼和展頻...............................................................................08
2.2.2.3　BPSK調變........................................................................................09
2.2.2.4　增高餘弦波型整型...........................................................................09
2.2.3　2.45GHz模式模式實體層標準...............................................................09
2.2.3.1　資料傳輸率.......................................................................................09
2.2.3.2　展頻...................................................................................................09
2.2.3.3　OQPSK調變.....................................................................................09
2.2.3.4　半正弦波型整型...............................................................................10
第三章　IEEE 802.15.4中2.45 GHz模式的基頻模擬系統.....................................11
3.1　發射端.............................................................................................................11
3.1.1　資料的映製和展頻..................................................................................11
3.1.2　調變及波型整型......................................................................................13
3.1.3　無線通道..................................................................................................14
3.2　接收機.............................................................................................................16
3.2.1　同調接收機..............................................................................................16
3.2.2　非同調接收機..........................................................................................17
3.2.3　差分偵測法..............................................................................................18
3.2.4　封包偵測..................................................................................................21
3.2.5　頻率補償..................................................................................................25
3.2.6　精確同步..................................................................................................28
第四章IEEE 802.15.4中2.45 GHz模式的基頻硬體電路架構
4.1　硬體語言撰寫.............................................................................................30
4.1.1　傳送端模組......................................................................................30
4.1.1.1　clk_gen模組..........................................................................30
4.1.1.2　bittochip模組........................................................................31
4.1.1.3　pulseshpe_2450M模組.........................................................32
4.1.1.4　delay模組..............................................................................33
4.1.1.5　整合發射端模組...................................................................34
4.1.2　接收端模組......................................................................................35
4.1.2.1　packetdet模組.......................................................................35
4.1.2.2 FOC模組..............................................................................36
4.1.2.3　finesync模組.........................................................................38
4.1.2.4　Demod模組...........................................................................41
4.1.2.5　chiptobit模組....................................................................... 44
4.1.2.6　整合接收端模組.................................................................. 45
4.2　合成............................................................................................................ 46
4.2.1　發射端............................................................................................. 46
4.2.2　接收端............................................................................................. 48
4.3 邏輯閘層次模擬以及FPGA........................................................................50
4.3.1　發射端..............................................................................................51
4.3.2　接收端............................................................................................. 53
第五章 結論與未來展望........................................................................................... 55
參考文獻..................................................................................................................... 56

[1] “IEEE Std 802.15.4-2003,” Institute of Electrical and Electronics Engineers, Inc., 1 October 2003.
[2] Shan, Q., Liu, Y., Prosser, G., Brown, D., “Wireless intelligent sensor networks for refrigerated vehicle,” Proceedings of the IEEE 6th Circuits and Systems Symposium, Vol.2, pp.525-528, 31 May-2 June, 2004.
[3] IEEE802.15.4 WPANTaskGroup4(TG4),URL:http://ieee802.org/15/pub/TG4.html
[4] ZigBee Alliance, URL: http://www.zigbee.org/en/index.asp
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