MOBILE COMMUNICATION SYSTEM AND WIRELESS BASE STATION UNIT

PROBLEM TO BE SOLVED: To attain communication with high quality by preventing a channel efficiency from being deteriorated while reducing the scale of an interference canceler section and the scale of signal processing due to increase in the number of users accommodated by a wireless base station un...

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Bibliographic Details
Main Authors TAKEUCHI YOSHIO, SUZUKI TOSHINORI, SAITO JOICHI, ISHIDA YUJI, TSUBAKI NAOKI, ARAIDA OSAMU, NAKAHARA SHIGETO
Format Patent
LanguageEnglish
Published 28.09.2001
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
TRANSMISSION
WIRELESS COMMUNICATIONS NETWORKS
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Summary:PROBLEM TO BE SOLVED: To attain communication with high quality by preventing a channel efficiency from being deteriorated while reducing the scale of an interference canceler section and the scale of signal processing due to increase in the number of users accommodated by a wireless base station unit and reducing the scale of the unit and the cost. SOLUTION: The figure illustrates the configuration of the interference canceler section provided in the wireless base station unit. Reception synchronization.path detection circuits 31-1-31-k and correlation units 32-1-32-k are installed only at the input stage of reception input signals and each interference cancel stage at post-stages requires no reception synchronization processing section or demodulation processing section. The correlation units apply inverse spread processing to the received signals and give the obtained inverse spread signals to interference cancel stages 33-1-33-n. Since each interference cancel stage requires no reception synchronization processing section or demodulation processing section, the increase in the scale of the unit and the signal processing can be reduced.
Bibliography:Application Number: JP20000080750