Title:
FREQUENCY TRACKING USING PILOT AND NON-PILOT SYMBOLS
Document Type and Number:
Japanese Patent JP2014123972
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve frequency tracking loops.SOLUTION: The invention is directed toward frequency tracking techniques using control symbols that include both pilot and non-pilot symbols. For example, both the pilot and non-pilot symbols can be used in estimating a frequency error of a received signal. The contribution of non-pilot symbols to the estimation can be weighted according to a confidence level associated with each non-pilot symbol. In some cases, soft decisions are generated for the non-pilot symbols and then used with the pilot symbols to perform frequency tracking.
Inventors:
SENDONARIS ANDREW
Application Number:
JP2014023512A
Publication Date:
July 03, 2014
Filing Date:
February 10, 2014
Export Citation:
Assignee:
QUALCOMM INC
International Classes:
H04B1/16; H04B1/707; H04B1/7087; H04L1/00; H04L27/00
Domestic Patent References:
| JPH07321868A | 1995-12-08 | |||
| JP2001509324A | 2001-07-10 | |||
| JPH0884096A | 1996-03-26 | |||
| JPH08503831A | 1996-04-23 | |||
| JPH07321868A | 1995-12-08 |
Foreign References:
| WO2001049000A1 | 2001-07-05 | |||
| WO2000038343A1 | 2000-06-29 | |||
| WO2002091656A1 | 2002-11-14 | |||
| WO2001059937A2 | 2001-08-16 | |||
| WO2001049000A1 | 2001-07-05 | |||
| WO2000038343A1 | 2000-06-29 | |||
| WO2002091656A1 | 2002-11-14 |
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Yoshihiro Fukuhara
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
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