2024年5月16日发(作者：内存不能为written修复工具)
专利内容由知识产权出版社提供
专利名称：PILOT DESIGN FOR OFDM SYSTEMS WITH
FOUR TRANSMIT ANTENNAS
发明人：Ma, Jianglei,Jia, Ming,Tong, Wen,Zhu,
Peiying,Yu, Dong-Sheng,Zhang, Hang,Xu, Hua
申请号：EP16205754.1
申请日：20060822
公开号：EP3174235A1
公开日：20170531
专利附图：
摘要：A method and apparatus for improving channel estimation within an OFDM
communication system. Channel estimation in OFDM is usually performed with the aid of
pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of
frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern.
In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular.
The method first interpolates in the direction of larger coherence (time or frequency).
Using these measurements, the density of pilot symbols in the direction of faster change
will be increased thereby improving channel estimation without increasing overhead. As
such, the results of the first interpolating step can then be used to assist the
interpolation in the dimension of smaller coherence (time or frequency).
申请人：Apple Inc.
地址：1 Infinite Loop Cupertino, CA 95014-2094 US
国籍：US
代理机构：Lang, Johannes
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