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Performance Analysis of Space-Time Block Code and Space-Frequency Block Code over Wireless Fading Channel
|關鍵字:||Space-Time Block Code;空時區塊碼;Space-Frequency Block Code;空頻區塊碼||出版社:||通訊工程研究所||引用:|| S. M. Alamouti, “ A Simple Transmitter Diversity Scheme for Wireless Communications” IEEE Select Areas Commun., Vol. 16, pp.1451-1458, Oct. 1998.  Branka Vucetic and Jinhong Yuan, “Space-Time Coding,” John Wiley & Sons Ltd Atrium, 2003.  Hamid Jafarkhani, “Space-Time Coding : Theory and Practice,” Cambridge university Press, 2005.  Mohinder Jankiraman, “Space-Time Codes and MIMO Systems,” Artech House, 2004.  James Demetriou and Rebecca MacKenzie, “Propagation basics,” Sept. 30 1998  V. Tarokh, H. Jafarkhani, and A. R. Calderband, “ Space-Time Block Coding for Wireless Communication: Performance Results,” IEEE J. Select Areas Commun., vol. 17, pp.451-460, Mar. 1999.  Henrik Schulze and Christian Luders, “Theory and application of OFDM and CDMA wideband wireless communications,” John Wiley & Sons Ltd Atrium,  Matthias Patzold, “Mobile Fading Channels,” John Wiley & Sons Ltd Atrium, 2002.  S. Suthaharan and A. Nallanathan, “Space-time coded MIMO-OFDM for high capacity and high data-rate wireless communications over frequency selective fading channels,” Proc. 4th IEEE International Workshop on Mobile and Wireless Communication network MWCN 2002, pp. 424-428, Sept. 2002  J. Yue and J. D. Gibson, “Performance of a space-time block ceded OFDM system,” pp. 1862-1866, 2002.  J. Cheng, H. Wang and S. Cheng, “Space-time block coded transmit diversity for OFDM system in mobile channles,” IEEE PIMRC 2002, pp. 208-210, 2002.  H. Bolcskei and Eth Zurich, “MIMO-OFDM wireless systems: basics, perspectives, and challenges.” IEEE Wireless Communications, Aug. 2006.  H. Bolcskei and A. Paulraj, “Space-frequency coded broadband OFDM systems,” Proc. IEEE Wireless Communication and Networking Conf., Chicago, IL, Sept. 2000, pp.1-6  Volkar Kuhn, “Wireless Communications over MIMO Channels: Applications to CDMA and Multiple Antennas Systems,” John Wiley & Sons Ltd Atrium.  Z. Liu, G. B. Giannakis, S. Zhou and B. Muquet, “Space-time coding for broadband wireless communications,” Wireless Communication and Mobile Computing, vol. 1 no. 1, pp. 35-53, Jan. 2001.  W. Choi and J. M. Cioffi, “Space-time block codes over frequency-selective Rayleigh fading channels,” in Proc. IEEE VTC'99, Amsterdam, Netherlands, Sep. 1999, pp. 2541-2545.  Gordon L. Stuber, John R. Barry, Steve W. Mclaughlin, Ye Li, Mary Ann Irgram and Thomas G. Pratt, “Broadband MIMO-OFDM Wireless Communications,” Proc, IEEE Vol. 92 No. 2, Feb 2004||摘要:||
空時編碼已經大幅改善了無線傳輸系統的系統效能. 而這樣技術也被許多的無線傳輸標準所應用與使用. 我們選這個方向作為論文的主題是由於 WiMax 無線傳輸的這個新技術. 我們將藉由空時區塊碼已經正交載波多工傳輸系統來模擬空時區塊碼在多天線傳輸以及空時區塊碼串接上正交載波多工系統的系統效能. 模擬的傳輸環境使用歐洲的無線傳輸通道 COST207 下作傳輸.
開始我們先模擬由 Alamouti 所提出的空時區塊碼編碼架構在無頻率選折性的無線衰減通道下的系統效能. 進而, 我們將通道換為多重路徑或頻率選折性的無線衰減通道. 由於通道的改變, 我們將原本的時空區塊碼系統後面串接上正交載波多工系統去對抗多重路徑的干擾, 進一步我將空時區塊碼轉換成空頻區塊碼, 將原本的時間概念換為頻率概念. 最後, 我們將未加上正交載波多工傳輸在多重路徑通道的系統效能與加上後的系統效能做比較, 來看系統效能的改善.
Space-time coding had improved the performance of wireless transmission. And this technology had been implemented into many wireless transmission standards. The reason that we choose this subject as our research field is because of the WiMAX technol-ogy. We take the STBC and OFDM system to simulate the performance results of both STBC only and STBC-OFDM system. The environment is using the European standard COST 207 as the channel to transmit datas.
First, we will take the STBC schemes proposed by Alamouti and Tarokh to transmit through the flat-fading channel to see the system performance. Then implying the OFDM system to substitute the transmission in time domain to transmission in fre- quency domain. Later on, we will simulate the system transmission without OFDM and with OFDM over multipath fading channel, to see the improvement of the performance.
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