Method of non-uniform doppler compensation for wid
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专利名称：Method of non-uniform doppler
compensation for wideband orthogonal
frequency division multiplexed signals
发明人：Milica Stojanovic
申请号：US11853106
申请日：20070911
公开号：US07844006B2
公开日：
20101130
专利内容由知识产权出版社提供
专利附图：
摘要：Described is a method for compensation of an OFDM signal propagating
through Doppler-distorted, time-varying multipath channels. The method is based on
low-complexity post-FFT signal processing. Minimum mean square error combining of signals is performed for signals received at spatially-distributed receiver elements using adaptive channel estimation and phase tracking. Doppler shifts are modeled as a consequence of motion-induced time compression and dilation. The Doppler rate is assumed constant over one OFDM block but can vary between OFDM blocks. Thus a non-constant Doppler shift is accommodated by the method. Non-uniform Doppler compensation across subchannels is based on adaptive estimation and prediction of the Doppler rate. A single adaptively estimated parameter is used to track the phases of all the carriers and channel estimates are updated on a block by block basis.
申请人：Milica Stojanovic
地址：Boston MA US
国籍：US
代理机构：Guerin & Rodriguez, LLP
代理人：William G. Guerin
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