METHOD AND APPARATUS FOR ADVANCED ADAPTIVE TWO DIMENSIONAL CHANNEL INTERPOLATION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) WIRELESS COMMUNICATION SYSTEMS

摘要

An adaptive channel interpolation method and apparatus for OFDM wireless communication systems that use reference symbol-assisted channel estimation is disclosed. A time frequency representation of a subframe having reference symbols scattered throughout is divided into parallelograms, wherein the vertices of each parallelogram are the reference symbols. The channel response of a data symbol at the center point of the parallelogram is estimated using two of the vertices from opposing vertices of the parallelogram.