H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/216 (2006.01) H04J 3/00 (2006.01) H04J 3/06 (2006.01) H04L 1/00 (2006.01) H04J 11/00 (2006.01) H04L 7/04 (2006.01) H04B 1/69 (2006.01) H04B 1/707 (2006.01) H04J 13/00 (2006.01)
Patent
CA 2319873
The code division multiplex transmission system according to the present invention produces data for transmission by, time-division multiplexing the signals for synchronizing spread code prepared for an easy synchronization of spread code on the receiving side and the information related to the structure or synchronization of each of a plurality of transmission data streams such as parameters information about the coding rate of the convolution code and interleaving size for each transmission data stream, generating spread frequency modulated signals of the above time- division multiplexed signals by a spread frequency modulation using a spread code known to the receiving side, and code-division multiplexing the resulting spread frequency modulated signals over the spread frequency modulated signals of the plurality of transmission data streams. As a result, the receiving terminal can obtain information such as parameters information of all the transmission data streams, as long as the receiving terminal receives the synchronization signal. Therefore, even if the receiving terminal does not understand the parameter values required for the reception of each transmission data stream, the receiving terminal can receive any transmission data stream easily and quickly, by setting the parameter values for each receiving process based on the parameters information about each transmission data stream obtained by the reception of the synchronization signal.
Hirakawa Shuji
Kikuchi Hideo
Serizawa Mutsumu
Watanabe Eiichi
Yokoi Tokihiko
Fetherstonhaugh & Co.
Kabushiki Kaisha Toshiba
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