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| Direct decoding in a space-time block code for frequency-selective fading channels |
| Zhao Zheng; Yin Qinye; Zhang Hong; Zhang Jianguo |
| School of Electron, and Info. Eng.,Xi’an Jiaotong University, Xi’an 710049, China |
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Abstract This paper proposes a decoding scheme in space-time block code system with three transmitting antennas and one receiving antenna for frequency-selective fading channels, which does not require channel estimation at the transmitter or receiver. By applying the subspace method to space-time codes, the direct decoding is accomplished from both a signal processing and space-time coding perspective. With the special orthogonal design of space-time block codes, the input of the space-time block code system is obtained from the subspace. The direct decoding is addressed for frequency-selective fading channels from a single carrier perspective. Monte Carlo simulations show the performance of direct decoding and the performance com-parison with the decoder using the perfect channel information.
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Received: 24 May 2002
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2003, Vol. 25 
