Spread spectrum communication system

专利名称：Spread spectrum communication system发明人：Takaki Uta,Takashi Yano,Nobukazu Doi申请号：US08/917733申请日：19970827公开号：US06141337A公开日：20001031

摘要：Before transmitting an upward traffic packet of a long code, a mobile terminalsends a short packet including a short code to a reservation channel. A base stationmeasures delay of each packet by an initial acquisition circuit to establish chip

synchronization timing and a packet de-multiplexer to separate from each other packetsoverlapped in time with each other. When spreading the long-code packet transmittedvia a traffic channel from the mobile terminal, information of the measured delay time issynchronously despread by setting a coefficient at an appropriate point of timing to amatched filter.

申请人：HITACHI, LTD.

代理机构：Antonelli, Terry, Stout & Kraus, LLP

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