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| Performance and Implementation of a Space-Time Coded MIMO OFDM System Using Frequency Spread Coding |
| Zheng Xia-yu; Qiu Ling; Zhu Jin-kang |
| Univ. of Sci. and Tech. of China Hefei 230027 China |
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Abstract In this paper, a space-time coded MIMO (Multiple-Input Multiple-Output) OFDM (Orthogonal Frequency Diversion Multiplexing) system using frequency spread cod-ing is proposed based on the fact that the fading effects of the transmitted signals on each sub-carrier are different owing to the frequency- selective fading property. The simulation re-sults indicate that the proposed scheme not only effectively exploits the inherent frequency diversity of the frequency-selective channel and maintains the spectrum efficiency of sys-tem, but also has a low complexity and is easy to realize compared to other MIMO OFDM systems.
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Received: 12 June 2003
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2004, Vol. 26 
