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| A Full-Diversity Space-Frequency Codes with Fast Decoding Structure and Optimized Coding Gains |
| Wang Xin① Fu Bin② Li Ying① Wei Ji-bo① |
| ①(School of Electronic Science and Engineering, National University of Defense Technology Changsha 410073, China) ②(Naval University of Engineering, Wuhan 430033, China) |
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Abstract Using a Compact Mapping Matrix (CMM) to transform a diagonal space-time coding, a design method for full-diversity space-frequency codes is proposed. Without losing the inherent space diversity of the space-time coding, the proposed space-frequency coding obtains extra frequency diversity provided by the frequency-selective fading channels and improve the performance. Further improvement is obtained by optimizing the coding gains. Exploring the diagonal structure of space-timing coding and the new research results, the proposed codes can be decoded with polynomial complexity. This facilitates the hardware implementation of the system.
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Received: 24 January 2007
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Corresponding Authors:
Wang Xin
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2008, Vol. 30 
