Spread spectrum communication system

Pulse or digital communications – Repeaters – Testing

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375200, 380 34, H04B 1707, H04B 169

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055464246

ABSTRACT:
A spreading process is performed with a spreading code assigned to each user and a spreading code assigned according to an attribute, and the resultant signal is modulated on the transmitter side. On the receiver side, a transmitted signal, modulated in the above manner, is subjected to a despreading process with the attribute-oriented spreading code from a reception spreading code generator, the resultant signal is subjected to despreading process with the user-specific spreading code from the reception spreading code generator, and those signals which have undergone the despreading processes are demodulated by data demodulators to extract desired information together with a desired signal corresponding to a wide band service. It is therefore possible to simplify the management of the individual users and individual services and facilitate the system design.

REFERENCES:
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Patent Abstracts of Japan, vol. 15, No. 161 (E-1060), Apr. 23, 1991 & JP-A-30 032241 (Mitsubishi Electric Corp.), Feb. 12, 1991.

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