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    • 41. 发明申请
    • RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD
    • 无线电发射装置和无线电发射方法
    • US20100002671A1
    • 2010-01-07
    • US12376002
    • 2007-08-02
    • Takashi IwaiSadaki FutagiDaichi ImamuraAtsushi MatsumotoYoshihiko Ogawa
    • Takashi IwaiSadaki FutagiDaichi ImamuraAtsushi MatsumotoYoshihiko Ogawa
    • H04B7/216
    • H04W56/005H04J13/0074H04J13/10H04W8/26H04W74/0866
    • A radio transmitting apparatus and a radio transmitting method wherein the interference between codes can be reduced and the degradation of preamble detection capability can be prevented. According to these apparatus and method, a signature table storing part (103) that stores a table including a plurality of signatures obtained by classifying the magnitudes of propagation loss levels into levels in accordance with the distances from a base station, associating preamble detection window widths with those levels as classified, and by circularly shifting the pattern of a detection window signature #n corresponding to a signature #n to generate a signature #n+1. A signature selecting part (104) selects, based on the magnitude of a propagation loss level outputted by a propagation loss level determining part (102), one of the corresponding signatures from the signature table storing part (103) at random. A RACH signal generating part (105) uses the selected signature to generate a RACH signal.
    • 一种无线电发送装置和无线电发送方法,其中可以减少代码之间的干扰,并且可以防止前导码检测能力的劣化。 根据这些装置和方法,一种签名表存储部分(103),其存储包括根据与基站的距离将传播损耗级别的大小分级为等级而获得的多个签名的表,将前同步码检测窗宽度 通过循环移位与签名#n对应的检测窗签名#n的图案,生成签名#n + 1。 签名选择部(104)基于由传播损耗等级确定部(102)输出的传播损耗等级的大小,从签名表存储部(103)中随机选择一个对应的签名。 RACH信号生成部(105)使用所选择的签名来生成RACH信号。
    • 42. 发明授权
    • Radio transmission device and radio transmission method
    • 无线传输设备和无线传输方式
    • US08472558B2
    • 2013-06-25
    • US12524689
    • 2008-01-30
    • Yoshihiko OgawaDaichi ImamuraSadaki FutagiAtsushi MatsumotoTakashi Iwai
    • Yoshihiko OgawaDaichi ImamuraSadaki FutagiAtsushi MatsumotoTakashi Iwai
    • H03C1/52H04L27/04
    • H04L25/0226H04J13/0059H04J13/22
    • It is possible to provide a radio transmission device and a radio transmission method which can avoid degradation of a channel estimation accuracy using a reference signal formed by a ZC sequence even when the RS transmission band of a local cell is different from that of an adjacent cell. A mobile station decides a cyclic shift sequence corresponding to RB allocation information from an RS table which correlates different frequency bandwidths from a reference point of respective transmission bands to a spectrum start number of the cyclic shift sequence so as to satisfy a particular relationship based on the sequence length and transmits the decided cyclic shift sequence as RS to a base station. The base station uses the same RS table as the RS table of the mobile station and performs correlation calculation of the RS transmitted from the mobile station, thereby performing channel estimation.
    • 可以提供一种无线传输装置和无线传输方法,即使当本地小区的RS传输频带与相邻小区的RS传输频带不同时,也可以使用由ZC序列形成的参考信号来降低信道估计精度的劣化 。 移动台从RS表中确定与RB分配信息相对应的循环移位序列,该RS表把不同的频带宽度从各个传输频带的参考点相关到循环移位序列的频谱起始号,从而满足基于 序列长度,并将所确定的循环移位序列作为RS发送到基站。 基站使用与移动站的RS表相同的RS表,对从移动台发送的RS进行相关运算,进行信道估计。