SPREAD SPECTRUM RADIO COMMUNICATION SYSTEM

PURPOSE:To send plural information signals as a radio signal of a same frequency band by applying spread spectrum in matching with a processing gain requested to the plural information signals. CONSTITUTION:A signal division circuit 1-2 of a radio transmission station 1A divides an information signa...

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Bibliographic Details
Main Authors TANAKA TOSHINORI, KUDO EISUKE, TAKANASHI HITOSHI
Format Patent
LanguageEnglish
Published 18.08.1995
Edition6
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
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Summary:PURPOSE:To send plural information signals as a radio signal of a same frequency band by applying spread spectrum in matching with a processing gain requested to the plural information signals. CONSTITUTION:A signal division circuit 1-2 of a radio transmission station 1A divides an information signal 1-1 to be sent into n-sets (n is an integer being 2 or over) whose transmission speeds are respectively V1, V2,..., Vn. Spread spectrum circuits 1-3-1-1-3-n multiply each spread code each having each of spread rates K1, K2,..., Kn being n-kinds of different spread codes and satisfying a condition of V1.K1=V2.K2=...=Vn.Kn with each of the divided information signal. A synthesis circuit 1-4 synthesizes n-sets of signals subject to spread spectrum and a transmitter 1-5 sends the synthesized signal as a radio signal of a same frequency band.
Bibliography:Application Number: JP19940035374