Invention Grant
- Patent Title: Equalization of a distributed pilot OFDM signal
- Patent Title (中): 分布式导频OFDM信号的均衡
-
Application No.: US13562724Application Date: 2012-07-31
-
Publication No.: US08837616B2Publication Date: 2014-09-16
- Inventor: Terrance W. Charbonneau , John P. Johnston , Bruce E. Reidenbach , Gregory T. Barnett
- Applicant: Terrance W. Charbonneau , John P. Johnston , Bruce E. Reidenbach , Gregory T. Barnett
- Applicant Address: US VA McLean
- Assignee: Exelis Inc.
- Current Assignee: Exelis Inc.
- Current Assignee Address: US VA McLean
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04K1/10
- IPC: H04K1/10
Abstract:
A technique for equalizing a distributed pilot OFDM signal with decision feedback involves correlating a received OFDM signal against a pilot reference to obtain a coarse channel estimate, where the received OFDM signal includes a distributed pilot signal and an OFDM data signal. The received OFDM signal is equalized based on the coarse channel estimate and the distributed pilot signal is removed to generate a coarse data signal estimate. The coarse data signal estimate is removed from the received OFDM signal using the coarse channel estimate to generate a residual pilot signal. The residual pilot signal can then be correlated against the pilot reference to obtain a fine channel estimate. The received OFDM signal is equalized based on the fine channel estimate, and the distributed pilot signal is removed to produce a fine data signal estimate from which data is recoverable.
Public/Granted literature
- US20140036984A1 Equalization of a Distributed Pilot OFDM Signal Public/Granted day:2014-02-06
Information query
