发明授权
- 专利标题: Velocity enhancement for OFDM systems
- 专利标题(中): OFDM系统的速度增强
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申请号: US10331692申请日: 2002-12-30
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公开(公告)号: US06904550B2公开(公告)日: 2005-06-07
- 发明人: Salvador Sibecas , Glafkos Stratis , Celestino Corral , Shahriar Enami , Gregg Rasor , Robert Gorday
- 申请人: Salvador Sibecas , Glafkos Stratis , Celestino Corral , Shahriar Enami , Gregg Rasor , Robert Gorday
- 申请人地址: US IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: US IL Schaumburg
- 主分类号: H04L27/26
- IPC分类号: H04L27/26 ; G01R31/28 ; H04J3/12 ; H04L7/00
摘要:
An orthogonal frequency division multiplexing (OFDM) transmitter method, consistent with certain embodiments of the present invention arranges OFDM data symbols representing data bits for transmission in a packet. A prescribed pattern of OFDM data symbols are removed (212) and replaced (216) with pilot symbols. The packet is then transmitted (220) to an OFDM receiver that receives the packet (224) and determines a channel correction factor from the pilot pattern. The receiver then estimates a plurality of channel correction factors, one for each of the plurality of OFDM symbols representing data (228) and uses these correction factors to correct the OFDM symbols representing data (232). Arbitrary data are then inserted in place of the pilot symbols (236). The OFDM symbols representing data along with the arbitrary data are then decoded using an error correction decoder that corrects the errors induced by substitution of the pilot symbols for data symbols (240).
公开/授权文献
- US20040128605A1 Velocity enhancement for OFDM Systems 公开/授权日:2004-07-01
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