发明授权
- 专利标题： Transmission device and transmission method
- 专利标题（中）： 传输装置及传输方式
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申请号： US09973613申请日： 2001-10-09
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公开(公告)号： US06980604B2公开(公告)日： 2005-12-27
- 发明人: Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi , Nobukazu Fudaba
- 申请人： Tokuro Kubo , Takayoshi Ode , Kazuo Nagatani , Hajime Hamada , Hiroyoshi Ishikawa , Yasuyuki Oishi , Nobukazu Fudaba
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Katten Muchin Rosenman LLP
- 优先权： JP2001-017045 20010125
- 主分类号： H03M1/66
- IPC分类号： H03M1/66 ; H03F1/32 ; H04B1/04 ; H04L5/06 ; H04L27/01 ; H04L25/49
摘要：
The present invention provides a transmission device for predistorting a digital signal in order to compensate distortion, then amplifying and transmitting it. A digital input signal is converted to a first analog signal by a first D/A converter. Separately, the digital input signal is also subjected to predistortion. A compensating signal is then generated from the digital input signal and the predistorted signal. The compensating signal generated thereby is converted into a second analog signal by a second D/A converter. The first analog signal and second analog signal are then added, this addition operation giving a compensated analog transmission signal. This analog transmission signal is supplied to the amplifier for amplification, and then transmitted via an antenna.
公开/授权文献
- US20020097811A1 Transmission device and transmission method 公开/授权日：2002-07-25