Invention Grant
US08532161B2 Method and apparatus that facilitates estimating Doppler spread for uplink transmissions
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便于估计上行链路传输的多普勒扩展的方法和装置
- Patent Title: Method and apparatus that facilitates estimating Doppler spread for uplink transmissions
- Patent Title (中): 便于估计上行链路传输的多普勒扩展的方法和装置
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Application No.: US12817798Application Date: 2010-06-17
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Publication No.: US08532161B2Publication Date: 2013-09-10
- Inventor: Renqiu Wang , Hao Xu
- Applicant: Renqiu Wang , Hao Xu
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Nerrie M. Zohn
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
Methods, apparatuses, and computer program products are disclosed for performing a Doppler spread estimation. In a first embodiment, an energy associated with a communication from a wireless terminal is ascertained based on at least one pilot symbol and at least one data symbol. Each of an energy variance and a noise variance are then determined to facilitate estimating a speed of the wireless terminal based on the energy variance normalized by the noise variance. In another embodiment, a signal received from a wireless terminal is decoded and replicated. A channel estimate associated with a set of data symbols is then ascertained from the replica, which is used to estimate the speed of the wireless terminal.
Public/Granted literature
- US20110142115A1 METHOD AND APPARATUS THAT FACILITATES ESTIMATING DOPPLER SPREAD FOR UPLINK TRANSMISSIONS Public/Granted day:2011-06-16
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