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A radio communication system having a base station and a plurality of radio terminals, wherein each radio terminal having a transmission request transmits a reservation packet at arbitrary timing through a reservation channel in accordance with a CDMA scheme, and the base station assigns a traffic c

A radio communication system having a base station and a plurality of radio terminals, wherein each radio terminal having a transmission request transmits a reservation packet at arbitrary timing through a reservation channel in accordance with a CDMA scheme, and the base station assigns a traffic channel and a time slot to be used to each radio terminal requesting a reservation through a reply packet outputted onto a reply channel. On the reservation channel, a short spreading code corresponding to a matched filter is applied.

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[ What is claimed is:] [16.]16. A packet communication system, comprising:a base station;a plurality of terminals;wherein packet communication is executed such that reservation packets are transmitted from said plurality of terminals to said base station through a reservation channel using Code Divi

[ What is claimed is:] [16.]16. A packet communication system, comprising:a base station;a plurality of terminals;wherein packet communication is executed such that reservation packets are transmitted from said plurality of terminals to said base station through a reservation channel using Code Division Multiple Access (CDMA), and a reply from said base station sets a start timing of packet communication, said pocket communication is made through CDMA traffic channels provided between said base station and said plurality of terminals,wherein said packet communication includes transmission of a single data packet from a terminal to said base station in response to a respective reply packet.