Invention Grant
US07974365B2 Method and apparatus for computing SIR of time varying signals in a wireless communication system
有权
用于在无线通信系统中计算时变信号的SIR的方法和装置
- Patent Title: Method and apparatus for computing SIR of time varying signals in a wireless communication system
- Patent Title (中): 用于在无线通信系统中计算时变信号的SIR的方法和装置
-
Application No.: US12535018Application Date: 2009-08-04
-
Publication No.: US07974365B2Publication Date: 2011-07-05
- Inventor: Philip J. Pietraski
- Applicant: Philip J. Pietraski
- Applicant Address: US DE Wilmington
- Assignee: InterDigital Technology Corporation
- Current Assignee: InterDigital Technology Corporation
- Current Assignee Address: US DE Wilmington
- Agency: Volpe And Koenig, P.C.
- Main IPC: H03K9/00
- IPC: H03K9/00 ; H04L27/00
Abstract:
A method and apparatus for correcting symbols of a common pilot channel (CPICH) to generate an accurate signal-to-interference ratio (SIR) estimate in a wireless communication system are disclosed. In one embodiment, a non-stationary mean of a group of the CPICH symbols is estimated, the CPICH symbols are delayed, and the CPICH symbols are corrected by dividing the delayed CPICH symbols by the estimated non-stationary mean of the group of CPICH symbols. In another embodiment, a signal power estimate is generated based on the magnitude of CPICH symbols, a noise power estimate is generated by subtracting the signal power estimate from a total power estimate based on the magnitude of the CPICH symbols, and a SIR estimate is generated for symbols that have undergone a time varying gain by dividing the signal power estimate by the noise power estimate.
Public/Granted literature
- US20090290617A1 METHOD AND APPARATUS FOR COMPUTING SIR OF TIME VARYING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM Public/Granted day:2009-11-26
Information query
