Transmission method for CDMA radiotelephone communications, and apparatuses for implementing such method
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United States of America Patent
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Aug 6, 1996
Grant Date -
N/A
app pub date -
Aug 12, 1994
filing date -
Aug 13, 1993
priority date (Note) -
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Abstract
A base station constructs CDMA channels, each defined by a respective spreading sequence which modulates information bits to be transmitted for forming a respective channel signal. The different channel signals are combined, and then modulated on a carrier frequency, so as to produce a phase shift keyed radio signal which is transmitted towards mobile stations. Each spreading sequence has only one real component. For producing the radio signal, a relative phase shift is applied between different channel signals.
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