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To: Rono who wrote (9201)	6/16/1999 8:03:00 PM
From: Rono	Read Replies (1) of 10227

I can't tell whether this is an application for, or grant for a patent. The assignee is Nextel. Patent #5,912,931 Method for multicarrier signal detection and parameter estimation in mobile radio communication channels Abstract A joint signal detection and channel parameter estimation scheme is provided for multiple subcarrier signaling with pilot symbol-assisted modulation schemes. Known symbols located in the subcarriers are used to estimate a pair of parameters associated with the generation process of the fading frequency selectivity common to all of the subcarriers. These known symbol estimates are used to derive parameter pair estimates for unknown symbols located in the subcarriers. This parameter estimation thus effectively extracts information regarding the fading frequency selectivity through the pilot symbols received not only by the subcarrier of interest but by other subcarriers as well. The fading complex envelope with each subcarrier is then derived from the estimates of the parameter pair.

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