发明名称 |
A wide-band application based upon a narrow-band tdma system |
摘要 |
The invention relates to the formation of a wide-band data transfer link (WB) as an extension to a data transfer system, which comprises narrow frequency bands (f2) for the organization of narrow-band data transfer calls using one frequency band. In accordance with the invention the data stream (S) which is to be trans-mitted is divided into substreams (S5 - S9), each of which modulates a different frequency band (f5 - f9). The signals thus obtained are combined (C) for trans-mission. The received signal is divided into frequency bands, which are de-modulated separately, and from the data substreams thus obtained the original data stream is reconstructed. The wide-band communication in accordance with the invention (WB) may further be divided among many users on the principle of time or frequency-division multiple access. <IMAGE> |
申请公布号 |
AU6306596(A) |
申请公布日期 |
1997.02.05 |
申请号 |
AU19960063065 |
申请日期 |
1996.07.02 |
申请人 |
NOKIA MOBILE PHONES LTD.;NOKIA TELECOMMUNICATIONS OY |
发明人 |
HARRI JOKINEN;ZHI-CHUN HONKASALO;ESA MALKAMAKI |
分类号 |
H04B7/26;H04J4/00;H04L27/26 |
主分类号 |
H04B7/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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