Method and system of iteratively detecting and decoding received symbols coupled with re-estimation of the coefficients of the transmission channel

摘要

In order to detect and iteratively decode encoded and interleaved symbols, prior to any iteration, a linear estimation (A) of the transmission channel Ĥ_(z)¹ is run on the basis of specific transmitted symbols. Then, by iterations, equalization (B) and decoding (C) process are subjected to an exchange of a priori information (D₂) on the symbol bits resulting from the decoding process (C) in the case of the equalization process (B) and on the encoded bits (D₁) resulting from the equalization process (B) in the case of the decoding process (C) and an updated iterative re-estimation (G,E₂) of the transmission channel is run on the basis of the information resulting from the equalization (B) and decoding (C) process.