Method for Processing Received OFDM Data Symbols and OFDM Baseband Receiver

摘要

The invention provides a method for processing received data symbols in an orthogonal frequency division multiplexing (OFDM) transmission scheme, and an OFDM baseband receiver which performs this method. The object to support frequency selective noise estimation, especially in interference limited environments, to offer improved estimation performance and reduced computational complexity 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 said time and frequency selective noise plus interference levels, applying said noise normalization values to the received data symbols to obtain normalized data symbols, applying said noise normalization values to the channel estimates, to obtain normalized channel estimates, determining communication parameter estimates from said normalized channel estimates, and determining demodulated and decoded data from said normalized data symbols using said normalized channel estimates.