Invention Application
- Patent Title: ADAPTIVE PILOT FILTER FOR A WIRELESS COMMUNICATION SYSTEM
- Patent Title (中): 适用于无线通信系统的自适应导频滤波器
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Application No.: US11761329Application Date: 2007-06-11
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Publication No.: US20070230544A1Publication Date: 2007-10-04
- Inventor: Parvathanathan Subrahmanya , Da-shan Shiu , Avneesh Agrawal
- Applicant: Parvathanathan Subrahmanya , Da-shan Shiu , Avneesh Agrawal
- Applicant Address: US CA San Diego 92121-1714
- Assignee: QUALCOMM INCORPORATED
- Current Assignee: QUALCOMM INCORPORATED
- Current Assignee Address: US CA San Diego 92121-1714
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H04B1/10 ; H04B1/707

Abstract:
Techniques to filter pilot symbols for a pilot in an “adaptive” manner to provide an improved estimate of the response of a communication channel. A received signal may experience different channel conditions at different times, and different multipaths may also experience different channel conditions even when received close in time. A pilot filter with an adaptive response is used to provide an improved estimate of the channel response. Various adaptive pilot filtering schemes may be used. In a first scheme, the channel conditions are estimated based on the quality of the received pilot. In a second scheme, the channel conditions are estimated based on the quality of the pilot estimates (i.e., the filtered pilot symbols). For each scheme, a particular filter response is selected based on the estimated quality of either the received pilot or the pilot estimates.
Public/Granted literature
- US07583756B2 Adaptive pilot filter for a wireless communication system Public/Granted day:2009-09-01
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