JOINT CHANNEL AND NOISE VARIANCE ESTIMATION IN A WIDEBAND OFDM SYSTEM

摘要

A kind of method and system, for the local (WLAN) of radio area network, while estimating unknown multi-path channel and noise characteristic (68) and improving system performance (67) using channel and noise estimation there are narrow-band interference signals. Estimate the frequency band that entirely appropriate unknown multi-path channel and noise characteristic are interfered without priori position knowledge and is generated using this information for without (67) decoder (71). Estimated using improvement navigation channel and noise, the 802. of error rate (PER)11g wlan systems can be kept, although with interference packet collisions, to allow 802.11g systems are in interference than less sensitive.