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    • 48. 发明申请
    • RADIO TRANSMISSION DEVICE, AND RADIO TRANSMISSION METHOD
    • 无线电传输设备和无线电传输方法
    • US20110002321A1
    • 2011-01-06
    • US12882032
    • 2010-09-14
    • Takashi IwaiDaichi ImamuraKenichi MiyoshiSadaki FutagiAtsushi MatsumotoTomofumi Takata
    • Takashi IwaiDaichi ImamuraKenichi MiyoshiSadaki FutagiAtsushi MatsumotoTomofumi Takata
    • H04B7/216
    • H04J13/0055H04J13/0062H04J13/0066
    • Provided are a radio transmission device and a radio transmission method, which prevent the deterioration of a preamble detecting performance while reducing the collision probability of a RACH. In this radio transmission device, a Signature table storage unit (103) divides the magnitudes of transmission loss levels into individual levels corresponding to the distances from a base station, to cause CAZAC series and circulation shift quantities to correspond to each other at the individual levels, and is provided with a table containing a plurality of Signatures created from the CAZAC series and the circulation shift quantities caused to correspond to each other. A Signature selecting unit (104) selects one of the corresponding Signatures at random from the Signature table storage unit (103), on the basis of the magnitude of the transmission loss level outputted from a transmission loss level deciding unit (102). A RACH signal generating unit (105) generates the RACH signal with the Signature selected.
    • 提供一种无线传输装置和无线传输方法,其防止前导码检测性能的劣化,同时降低RACH的冲突概率。 在该无线发送装置中,签名表存储部(103)将传输损耗级别的大小划分为与基站的距离对应的各个级别,使得CAZAC序列和循环移位量在各个级别彼此对应 并且设置有包含从CAZAC系列创建的多个签名和导致彼此对应的循环移位量的表。 签名选择单元(104)根据从传输损失等级决定单元(102)输出的传输损耗电平的大小,从签名表存储单元(103)中随机选择一个对应的签名。 RACH信号生成单元(105)在选择了签名的情况下生成RACH信号。