In this paper a new Soft Input - Soft Output (SISO) equalizer of linear complexity is developed. The algorithm can be used in the so-called Turbo Equalization scheme as a low cost solution in place of the Maximum A-Posteriori (MAP) equalization algorithm which has a prohibitive complexity for most real world applications. The proposed equalizer consists of two parts, namely, a Soft Interference Canceller (SIC) and a pre-processing part which is a new Variable-Threshold Decision Feedback Equalizer (VTDFE). The main difference in the proposed equalizer as compared to the SIC is that the input to the cancellation filter is computed not only using a-priori probabilities, but information from the received signal as well. Simulation results have shown that the proposed turbo equalizer exhibits a superior performance as compared to the turbo equalization scheme based on the conventional SIC as well as other linear complexity SISO equalizers. © Springer-Verlag Berlin Heidelberg 2005.
CITATION STYLE
Ampeliotis, D., & Berberidis, K. (2005). A low complexity turbo equalizer. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 3746 LNCS, pp. 765–775). https://doi.org/10.1007/11573036_73
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