Transmitter, receiver, communication system, and communication method employing spread spectrum communication technique
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United States of America Patent
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-
Jan 12, 1999
Grant Date -
N/A
app pub date -
Jan 28, 1997
filing date -
Oct 1, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Transmission mode selection is enabled, so communication reliability, transmission speed, and equipment utilization efficiency are all high. A first transmission system whereby spectrum spreading is accomplished with a spread code 1 and data is transmitted, and a second transmission system whereby data is transmitted with a spread code 2, are provided. In high-reliability transmission mode, identical data from a data buffer is transmitted through both the first and second transmission systems to achieve space diversity. In high-speed mode, data divided by a data division circuit is transmitted simultaneously through the first and second transmission systems, making possible efficient data transfer. Control information insertion circuits append transmission mode data to the transmitted data.
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