发明授权
- 专利标题: Multi-carrier CDMA communications systems
- 专利标题(中): 多载波CDMA通信系统
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申请号: US879773申请日: 1997-06-20
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公开(公告)号: US6097712A公开(公告)日: 2000-08-01
- 发明人: Norman P. Secord , Leo Strawczynski , Alberto Gutierrez , Ahmad Jalali
- 申请人: Norman P. Secord , Leo Strawczynski , Alberto Gutierrez , Ahmad Jalali
- 申请人地址: CAX Montreal
- 专利权人: Nortel Networks Limited
- 当前专利权人: Nortel Networks Limited
- 当前专利权人地址: CAX Montreal
- 主分类号: H04L5/02
- IPC分类号: H04L5/02 ; H04B7/216 ; H04L27/30
摘要:
In a receiver of a simulcast multi-carrier CDMA (code division multiple access) communications system, a combined data signal is produced by combining signals representing data received for the plurality of carriers and is multiplied by the complex conjugate of a composite reference signal, representing characteristics of the plurality of carriers, produced by combining signals representing a reference signal received for the plurality of carriers, thereby improving multi-path resolution due to frequency diversity of the reference signal over the multiple carriers of the system. The receiver can be simplified by demodulating the signals of the plurality of carriers in common to produce a demodulated signal which is common to the data and reference signals for the plurality of carriers, the data and reference signals being subsequently separated using their respective orthogonal codes. Data signals can be recovered both with and without the improved multi-path resolution over the multiple carriers, and an optimum selection between them can be made.
公开/授权文献
- US5245478A Mount for Berek compensator 公开/授权日:1993-09-14
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