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Comm Final Project Proposal 802.11a Physical Layer

Comm Final Project Proposal 802.11a Physical Layer. 第一組 電機四 B93902016 蔡馭理 電機四 B93901154 溫建樹 資工四 B93902076 智障鴻. 802.11a Physical Layer Structure. Modulation. OFDM transmit infomation by modulated signal and always use M-PSK, M-QAM. M-PSK modulation M-QAM. 802.11a Modulation Mode.

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Comm Final Project Proposal 802.11a Physical Layer

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  1. Comm Final Project Proposal 802.11a Physical Layer 第一組 電機四 B93902016蔡馭理 電機四 B93901154溫建樹 資工四 B93902076智障鴻

  2. 802.11a Physical Layer Structure

  3. Modulation • OFDM transmit infomation by modulated signal and always use M-PSK, M-QAM. • M-PSK modulation • M-QAM

  4. 802.11a Modulation Mode

  5. Concept of Serial/Parallel

  6. Inverse Fast Fourier Transform • We use IFFT to represent OFDM signal. • IFFT and Muti-carrier wave are same.

  7. OFDM Signal Consider a serial data and The m-st output signal is (IFFT output) means signal length

  8. OFDM Signal • We only consider real part • Pass low pass filter

  9. Our project schedule 12/06~12/13 (1)OFDM reading (2)FFT and IFFT implement 12/13~12/20 (1)S/P and P/S (2)Combine all the component 12/20~12/27 (1)AWGN and Fading channel (2)Add and Remove Guard Interval 12/27~01/03 (1)Modulatotion and Demodulation (2)Pilot Sequence and Equalizer 01/17~01/24 (1)Convolution Encoder and Decoder (2)Interleaver and De-interleaver (3)Combine and finish 802.11a

  10. 802.11a Physical Layer Structure • We want to implement the structure. • Implement by C or C++ language. • We may do some different modulation to get different result. • The structure mainly is OFDM, so we intend to do from OFDM. • If the time is enough, we continue to do 802.11a Physical Layer.

  11. Reference • 1.通訊系統設計與模擬 • 2. • 3. • 4.Google

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