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    • 1. 发明申请
    • COMMUNICATION DEVICE
    • 通信设备
    • US20100254497A1
    • 2010-10-07
    • US12752797
    • 2010-04-01
    • Shimpei TOYasuhiro HAMAGUCHIHideo NANBASeiichi SAMPEIHiroshi HARADAMasafumi MORIYAMA
    • Shimpei TOYasuhiro HAMAGUCHIHideo NANBASeiichi SAMPEIHiroshi HARADAMasafumi MORIYAMA
    • H04B1/10
    • H04L27/2602H04B7/061H04B7/084H04J13/18H04L5/0023H04L5/0044H04L5/0094H04L25/0204H04L25/0224H04L27/261H04L27/2647
    • Improving the accuracy of estimation of channel responses in receiving signals from a plurality of antennas is disclosed. A transmitting device of a base station includes a preamble A generating unit 010, a preamble B generating unit 011, phase rotating units 012 and 013, multiplexing units 014 and 015, an forward error correction coding unit 016, an S/P converting unit 017, a mapping unit 018, a changeover switch 019, IDFT (or IFFT) units 020 and 026, P/S converting units 021 and 027, GI (Guard Interval) inserting units 022 and 028, D/A converting units 023 and 029, radio transmitting units 024 and 030 and antenna units 025 and 031. In the preamble A generating unit 010 and the preamble B generating unit 011, a preamble A and a preamble B (see the packet format in FIG. 1) are generated, respectively. The preamble A is outputted to the multiplexing units 014 and 015, while the preamble B is outputted to the phase rotating units 012 and 013. The phase rotating units 012 and 013 to which the preamble B has been inputted give continuous phase rotation to subcarriers of the preamble B. In the transmitting device of the base station according to this embodiment, the phase rotating unit 012 does not give phase rotation, but only the phase rotating unit 013 gives phase rotation to the preamble B.
    • 公开了在从多个天线接收信号时提高信道响应的估计精度。 基站的发送装置包括前导码A生成部010,前导码B生成部011,相位旋转部012,003,复用部014,015,前向纠错编码部016,S / P转换部017 ,映射单元018,切换开关019,IDFT(或IFFT)单元020和026,P / S转换单元021和027,GI(保护间隔)插入单元022和028,D / A转换单元023和029, 无线电发送单元024和030以及天线单元025和031.在前导码A生成单元010和前导码B生成单元011中,分别生成前导码A和前导码B(参见图1中的分组格式)。 前导码A被输出到多路复用单元014和015,同时前同步码B被输出到相位旋转单元012和013.前导码B已被输入的相位旋转单元012和013给予连续的相位旋转, 前导码B.在本实施方式的基站的发送装置中,相位旋转单元012不给出相位旋转,只有相位旋转单元013向前同步码B提供相位旋转。