Invention Grant
- Patent Title: Block time domain channel estimation in OFDM system
- Patent Title (中): OFDM系统中的时域信道估计
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Application No.: US14525024Application Date: 2014-10-27
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Publication No.: US09319260B2Publication Date: 2016-04-19
- Inventor: Steven C Thompson , Fernando Lopez de Victoria
- Applicant: Acorn Technologies, Inc.
- Applicant Address: US CA La Jolla
- Assignee: Acorn Technologies, Inc.
- Current Assignee: Acorn Technologies, Inc.
- Current Assignee Address: US CA La Jolla
- Agency: Orrick Herrington & Sutcliffe LLP
- Main IPC: H03K7/00
- IPC: H03K7/00 ; H04L27/26 ; H04L25/02

Abstract:
An OFDM receiver receives OFDM symbols in the frequency domain and comb filters and then punctures the OFDM symbols to leave symbols with actual pilot information and with null values at the data symbols. The receiver provides the punctured OFDM symbols to an OFDM symbol queue. A virtual pilot interpolator is coupled to the punctured OFDM symbol storage to generate virtual pilot information introduced to OFDM symbols. The interpolator may be a two dimensional Wiener filter. The receiver also includes a time domain channel estimator that processes a first OFDM symbol including virtual pilot information to generate a channel impulse response for the first OFDM symbol. A frequency equalizer equalizes the OFDM symbol in response to the channel impulse response for the first OFDM symbol.
Public/Granted literature
- US20150043629A1 BLOCK TIME DOMAIN CHANNEL ESTIMATION IN OFDM SYSTEM Public/Granted day:2015-02-12
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