Invention Grant
US08401123B2 Method and system for increasing the accuracy of frequency offset estimation in multiple frequency hypothesis testing in an E-UTRA/LTE UE receiver
有权
用于提高E-UTRA / LTE UE接收机多频率假设检验中频偏估计精度的方法和系统
- Patent Title: Method and system for increasing the accuracy of frequency offset estimation in multiple frequency hypothesis testing in an E-UTRA/LTE UE receiver
- Patent Title (中): 用于提高E-UTRA / LTE UE接收机多频率假设检验中频偏估计精度的方法和系统
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Application No.: US12510901Application Date: 2009-07-28
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Publication No.: US08401123B2Publication Date: 2013-03-19
- Inventor: Francis Swarts , Mark Kent
- Applicant: Francis Swarts , Mark Kent
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox PLLC
- Main IPC: H04L27/06
- IPC: H04L27/06
Abstract:
A mobile device receives a radio frequency (RF) signal comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device performs multiple frequency hypothesis (MFH) testing via multiple MFH branches. A PSS correlation process is performed for each MFH branch. Frequency offset for receiving data is estimated using resulting correlation data. A desired offset is placed in each MFH branch. A baseband signal is frequency offset per MFH branch according to the desired frequency offset before the PSS correlation process. A received PSS is detected based on a maximum PSS correlation over the entire set of MFH branches. A frequency offset is estimated for the MFH branch associated with the detected PSS by combining an associated residual frequency with a corresponding desired offset. The frequency offset estimate is used for baseband signal processing and/or adjusting a reference oscillator frequency at the mobile device.
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