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A SELF-ADAPTIVE FREQUENCY INTERPOLATOR FOR USE IN A MULTI-CARRIER RECEIVER
A SELF-ADAPTIVE FREQUENCY INTERPOLATOR FOR USE IN A MULTI-CARRIER RECEIVER
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机译:用于多载波接收机的自适应频率插值器
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摘要
A Digital Video Broadcasting-Terrestrial/Handheld (DVB-T/H) receiver comprises a controller and a frequency interpolator for use in estimating channel state information (CSI) information of a received signal by frequency interpolation. The controller determines a multi-path delay ( T max ) for the received signal and adjusts the bandwidth of the frequency interpolator as a function of the determined multi-path delay. For example, when the multi-path delay is small, the bandwidth of the frequency interpolator is adjusted to be smaller than the bandwidth of the frequency interpolator when the multi-path delay is large. In addition, the controller may also change the coefficients of the frequency interpolator such that different word lengths are used for the coefficients as a function of the determined multi-path delay.
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