System and method for enhanced channel estimation using tap-dependent frequency offset (FO) estimation
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United States of America Patent
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-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Jul 14, 2016
filing date -
Mar 7, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatuses (and methods of manufacturing same), systems, and methods for channel interpolation/estimation and/or frequency tracking suitable for a receiver in a high speed single frequency network (HS-SFN) scenario are described. In one aspect, an estimated frequency offset (FO) correction is calculated for a received signal using at least an FO estimation provided by an automatic frequency control (AFC) in a first feedback loop and a channel estimate is calculated using at least the estimated FO and one or more channel parameter estimates from the AFC in a second feedback loop. In another aspect, a phase locked loop (PLL) receives an lth orthogonal frequency division multiplexing (OFDM) symbol and produces a per-tap phase value for each tap i of the lth OFDM symbol. The per-tap phase values of the lth OFDM symbol are used to generate the PLL output, which is also used as input to a feedback loop.
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International Classification(s)
- 2016 Application Filing Year
- H04L Class
- 37326 Applications Filed
- 27972 Patents Issued To-Date
- 74.94 % Issued To-Date
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- H04L Class
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