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標題: 空時區塊碼連結渦輪碼之設計
Design Scheme of Space-Time Block Codes Concatenated with Turbo Codes
作者: 李佳展
Lee, Jia-Jhan
關鍵字: Space-time block code;空時區塊碼;Turbo code;渦輪碼
出版社: 電機工程學系所
引用: [1] S. M. Alamouti, “A Simple Transmitter Diversity Scheme for Wireless Communi- cations,” IEEE J. Select. Areas Commun., vol. 16, pp. 1451-1458, Oct. 1998. [2] V. Tarokh, H. Jafarkhani, and A. R. Calderbank, “Space-Time Codes for High Da- ta Rate Wireless Communication: Performance Criterion and Code Construction,” IEEE Trans. Inform. Theory., vol. 44, pp. 744-765, Mar. 1998. [3] V. Tarokh, H. Jafarkhani, and A. R. Calderbank, “A Space-Time Coding Modem for High-Data-Rate Wireless Communications,” IEEE J. Select. Areas Commun., vol. 16, pp. 1459-1478, Oct. 1998. [4] V. Tarokh, H. Jafarkhani, and A. R. Calderbank, “Space-Time Block Coding for Wi reless Communication: Performance Results,” IEEE J. Select. Areas Commun., vol. 17, pp. 451-460, Mar. 1999. [5] V. Tarokh, H. Jafarkhani, and A. R. Calderbank, “Space-Time Block Cods from Orthogonal Designs,” IEEE Trans. Inform. Theory., to be published. [6] Shu Lin, Daniel J. Costello, Error Control Coding, New Jerset, 2004. [7] L. R. Bahl, J. Cocke, F. Jelinek, and J. Raviv, “Optimal Decoding of Linear Codes for Minimizing Symbol Error Rate,” IEEE Trans. Inform. Theory., IT-20: 284-87, Mar. 1974 [8] Junghoon Suh and M.M.K. Howlader, “Concatenation of turbo code with transmit diversity without channel estimation,” IEEE VTC, May 2002. [9] Junghoon Suh and M.M.K. Howlader, “Design schemes of space-time block codes concatencated with turbo codes,” IEEE VTC, May 2002. [10] T. H. Liew and Lajos Hanzo, “Space-time codes and concatenated channel codes for wireless communications” Proceedings of the IEEE, vol. 90, pp. 187-219, Feb. 2002.

The wireless channel suffers severe attenuation caused by multipath fading. The effective technique to mitigate multipath fading is to use the time or frequency diversity. The communication system with multiple input multiple output can combat the channel attenuation by spatial diversity and increase the channel information capacity. The principle of space-time coding schemes is to combine the concept of channel coding design and multiple transmit antennas, which are then effectively applied to multipath wireless channel.
Since the amount of data transfer of the modern digital or mobile communication is increasing, the reliability of the data transfer has become more and more important. Therefore, the error correction coding has played a very important role in wireless communication channel. The turbo code is one of the most popular error correction codes at present due to its good error correction ability. Besides, the turbo code is adopted in the 3G mobile communication standard.
In this thesis, we present the application of several important concepts of wireless digital communications, i.e., serial concatenation, turbo coding, and temporal and antenna diversity . We combine the turbo code and the space-time block code and use the LogMAP algorithm to implement the soft in/soft out decoding algorithms of turbo code. Finally, we present our simulation results under different encoding scheme of the space time block code. Furthermore, we also present the comparison of the simulation result under different rate of space-time block codes but the same number of transmit antennas.
其他識別: U0005-2307200711135900
Appears in Collections:電機工程學系所

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