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1. AU2003273053 - Transmitter

官庁 オーストラリア
出願番号 2003273053
出願日 20.10.2003
公開番号 2003273053
公開日 22.01.2004
公報種別 A
IPC
H04L 27/26
H電気
04電気通信技術
Lデジタル情報の伝送,例.電信通信
27搬送波変調方式
26多周波符号を用いる方式
CPC
H04L 27/2614
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2614Peak power aspects
出願人 HITACHI KOKUSAI ELECTRIC INC.
発明者 Hasegawa, Norio
Kawai, Hisashi
Miyatani, Tetsuhiko
Watanabe, Jun
Yoshida, Masami
優先権情報 2002-307907 23.10.2002 JP
発明の名称
(EN) Transmitter
要約
(EN)
A transmitter for averagedly suppressing the variation in input level of an amplifier according to variation in carrier level. The transmitter comprises an input power calculation section (16) for calculating mean input power of each carrier, an output power calculating section (17) for calculating mean output power of each carrier after the carrier band is limited, a monitoring section (18) for identifying a carrier having the maximum mean input power, acquiring the maximum value, acquiring the mean output power of the identified carrier, determining the ratio of the mean input power to the mean output power, calculating level control information which is the ratio of the ratio determined above to a predetermined expected value, and a signal level adjusting section (15) for adjusting the level of a multicarrier signal by multiplying the level control information outputted from the monitoring section (18).

他の公開
US2006189282