Abstract
Vector Viterbi Algorithm (VVA) is an optimal decoding algorithm in multiple-channel environments. It can be applied in coded Multi-Input-Multi-Output (MIMO) systems, but its complexity makes its application difficult. This paper proposes adaptive Threshold VVA (T-VVA) for coded MIMO system. By adaptively choosing a threshold according to Signal to Noise Ratio (SNR) of channel, T-VVA only searches a subset of branches for path extension. The easy method to decide the threshold is also derived based on Cheroff bound. Simulation results show that the near-optimal decoding results can be obtained with largely reduced complexity.
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Communication author: Wang Bing, born in 1966, female, Ph.D. Division of Acadamic Journals, Higher Education Press, Beijing 100011, China.
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Wang, B., Zhao, Y., Zou, L. et al. Quasi-optimal T-VVA in coded MIMO systems. J. of Electron.(China) 22, 125–130 (2005). https://doi.org/10.1007/BF02688138
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DOI: https://doi.org/10.1007/BF02688138