Invention Grant
- Patent Title: Blind CRS detection
- Patent Title (中): 盲CRS检测
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Application No.: US14191243Application Date: 2014-02-26
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Publication No.: US09240864B2Publication Date: 2016-01-19
- Inventor: Xiliang Luo , Wenshu Zhang , Keith William Saints , Ke Liu , Kapil Bhattad , Alexei Yurievitch Gorokhov
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Patterson & Sheridan, LLP
- Main IPC: H04L1/00
- IPC: H04L1/00 ; H04L5/00 ; H04L25/06 ; H04L27/26 ; H04L25/02

Abstract:
Certain aspects of the present disclosure relate to methods and apparatus for blind detection of cell-specific reference signals. Methods and apparatus are provided for detecting a cell-specific reference signal (CRS) in an orthogonal frequency division multiplexed (OFDM) symbol by a user equipment (UE). The method generally includes predicting a current channel response of a current OFDM symbol based on a channel response of at least one previous OFDM symbol, estimating a noise power level of the current OFDM symbol, forming a log likelihood ratio (LLR) of two detection hypotheses based on the predicted current channel response and the estimated noise power level, comparing the LLR to a pre-determined threshold, and determining that at least one CRS is present in the current OFDM symbol based on the comparison.
Public/Granted literature
- US20150071387A1 BLIND CRS DETECTION Public/Granted day:2015-03-12
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