Invention Grant
- Patent Title: Methods and apparatus for frequency offset estimation
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Application No.: US15592087Application Date: 2017-05-10
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Publication No.: US10171278B2Publication Date: 2019-01-01
- Inventor: Hyun Soo Cheon , Hong Jik Kim , Tejas M. Bhatt
- Applicant: Hyun Soo Cheon , Hong Jik Kim , Tejas M. Bhatt
- Applicant Address: US CA Santa Clara
- Assignee: CAVIUM, LLC
- Current Assignee: CAVIUM, LLC
- Current Assignee Address: US CA Santa Clara
- Agency: JW Law Group
- Agent James M. Wu
- Main IPC: H04L27/26
- IPC: H04L27/26

Abstract:
Methods and apparatus for frequency offset estimation are disclosed. In an exemplary embodiment, a method includes determining a demodulation reference signal (DMRS) frequency offset estimate from DMRS symbols in a received signal, and determining a cyclic prefix (CP) frequency offset estimate from cyclic prefix values in the received signal. The method also includes combining the DMRS and CP frequency offset estimates to determine a final frequency offset estimate. In an exemplary embodiment, an apparatus includes a DMRS frequency offset estimator that determines a DMRS frequency offset estimate based on DMRS symbols received in an uplink transmission, and a cyclic prefix (CP) frequency offset estimator that determines a CP frequency offset estimate based on cyclic prefix values in the uplink transmission. The apparatus also includes an offset combiner that combines the DMRS frequency offset estimate with the CP frequency offset estimate to generate a final frequency offset estimate.
Public/Granted literature
- US20170331664A1 Methods and Apparatus for Frequency Offset Estimation Public/Granted day:2017-11-16
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