近年來各行業的資訊傳輸逐漸走向行動化，電腦鏈結從有線網際網路的形態提升為有線和無線網路並存的模式。無線區域網路的優勢就在於移動性佳，設置建構容易，因此深受消費者的採用。目前市面上大部份的無線區域網路之傳送接收模組是採用IEEE 802.11b的實體層協定來設計，本論文研究的目的是在德州儀器公司的整合式環境發展系統下以TMS320C54XX數位信號處理器之組合語言來撰寫IEEE 802.11b實體層所制定的部份協定，它包括序文攪碼器(Preamble Scrambler)、差動二進位相位調變器(DBPSK)及CRC-16等演算法，並在整合式環境發展系統下做軟體程式測試與模擬，由模擬的結果得知本文提出的演算法符合IEEE 802.11b的協定。

　In recent years, the information transmission of every profession and trade tends to get portable gradually. The computer-link mode has been changed from cable network mode into cable-wireless mixing network mode. The advantages of the wireless local area network (WLAN) are easy to move, establish, and dismantle. Therefore, WLAN has been deeply accepted by popular consumers. However, most of WLAN transceiver modules are designed by using the IEEE 802.11b physical layer protocol. The major goal of this thesis is to use TMS320C54XX DSP assembly language to program the algorithms of scrambler, differential binary phase shift keying (DBPSK) and CRC-16, defined by IEEE 802.11b physical layer protocol, under Texas Instruments Integrated Environment Development Systems. All of the programs were tested and simulated under Texas Instruments Integrated Environment Development Systems. From the simulated results it can be found that the proposed system programs agree with IEEE 802.11b physical layer protocol.

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