| 摘要 |
The present invention concerns a method for estimating a channel impulse response between a source and a receiver, data transmitted by the source being coded and organized as data symbols. The receiver:
- determines a first matrix with size PxL, L being the number of taps and determining a Discrete Fourier Transform matrix of size PxP,
- demodulates the received signals representative of data symbols, in order to produce received data symbols,
- parallelizes the received data symbols,
- executes a Discrete Fourier Transform on the parallelized received data symbols,
- demaps the transformed received data symbols from the sub-carriers,
- estimates iteratively the channel impulse response from the demapped received data symbols, the channel estimation being dependent of the first matrix, the Discrete Fourier Transform matrix and of a second matrix which is defined according to a posteriori probabilities that the transferred data symbols are equal to possible modulation symbols of the modulation scheme. |
