| 摘要 |
A method is provided for processing received data symbols in an orthogonal frequency division multiplexing (OFDM) transmission scheme, and an OFDM baseband receiver which performs this method, in order to support frequency selective noise estimation, especially in interference limited environments, and to offer improved estimation performance and reduced computational complexity. This is achieved by determining time and frequency selective levels of combined noise and interference, computing noise normalization values for a respective time-frequency region of the time-frequency plane that applies in the transmission scheme employed, from the time and frequency selective noise plus interference levels, applying the noise normalization values to the received data symbols to obtain normalized data symbols, applying the noise normalization values to the channel estimates, to obtain normalized channel estimates, determining communication parameter estimates from the normalized channel estimates, and determining demodulated and decoded data from the normalized data symbols using the normalized channel estimates. |
