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Jointly Iterative Maximum-Likelihood Estimation and Decoding for
Space-Time Trellis Coding |
Lü Zhuo; Li Jian-dong; Li Wei-ying |
State Key Lab. of Integrated Service Networks, Information Science Institute, Xidian Univ., Xi’an 710071, China |
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Abstract In the paper, a jointly iterative maximum-likelihood channel estimation and decoding method is proposed for space-time trellis coding. By utilizing few of pilots, it can achieve better performance than the conventional non-iterative maximum-likelihood decoding. Simulation results show that the iterative method with 4 iterations has less than 1dB loss compared to the maximum-likelihood decoding with ideal channel state information. Finally, according to the simulation results, the method also gives a reasonable choice of both the steps of iterations and the amount of pilots.
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Received: 03 December 2004
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