发明授权
US5694389A OFDM transmission/reception system and transmitting/receiving apparatus
失效
OFDM发送/接收系统和发送/接收装置
- 专利标题: OFDM transmission/reception system and transmitting/receiving apparatus
- 专利标题(中): OFDM发送/接收系统和发送/接收装置
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申请号: US605742申请日: 1996-02-22
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公开(公告)号: US5694389A公开(公告)日: 1997-12-02
- 发明人: Takashi Seki , Noboru Taga , Shigeru Okita
- 申请人: Takashi Seki , Noboru Taga , Shigeru Okita
- 申请人地址: JPX Kawasaki
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JPX Kawasaki
- 优先权: JPX7-037049 19950224
- 主分类号: H04L27/18
- IPC分类号: H04L27/18 ; H04J11/00 ; H04J13/00 ; H04J13/16 ; H04L27/26
摘要:
This invention improves the frequency acquisition range and the resistance to multipath interference. In a digital signal transmission system using OFDM, on the transmission side, some or all of a plurality of equidistant carrier positions are treated as reference carrier positions. The actual transmitted carriers are arranged in a predetermined pattern non-equidistant to the frequency carrier positions to form an OFDM symbol. This OFDM symbol is periodically transmitted as frequency reference symbols. On the reception side, the carrier arrangement pattern of the frequency reference symbols is detected, a carrier frequency offset is detected from the detected pattern offset, and the carrier frequency is compensated based on the frequency offset.
公开/授权文献
- US5149889A Composition for use in organolithium synthesis reactions 公开/授权日:1992-09-22