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    • 9. 发明申请
    • PILOT STRUCTURE FOR MULTICARRIER TRANSMISSIONS
    • 用于多路传输的导频结构
    • WO2007036787A2
    • 2007-04-05
    • PCT/IB2006/002681
    • 2006-09-27
    • NOKIA CORPORATIONNOKIA, INC.RINNE, Mika, P.TIRKKONEN, OlavHUGL, Klaus
    • RINNE, Mika, P.TIRKKONEN, OlavHUGL, Klaus
    • H04L27/26H04B7/04
    • H04B7/0669H04L5/0007H04L5/0023H04L5/0026H04L5/0048H04L5/005H04L5/0051H04L25/0224H04L2025/03802H04W52/325
    • A method, device, computer program product, integrated circuit, and system are described to dispose pilot sequences (for aiding a receiver in estimating a channel) in a frame structure that has subframes of sub-carriers and symbol positions. Locations of common pilot sequences are predetermined, and includes 1) in each subframe, a pilot sequence is disposed in a first symbol position for each of at least two staggered sub-carriers, and 2) in at least one subframe, at least one pilot sequence is disposed in other than the first symbol position and in a sub-carrier other than any of the at least two staggered sub- carriers. Dedicated pilot sequences, whose locations in the frame are not predetermined, are disposed in response to an indication of channel quality received over a wireless link. Common pilot sequences may relate to one or two transmit antennas, and dedicated pilot sequences may enable addition of third and fourth transmit antennas.
    • 描述了一种方法,设备,计算机程序产品,集成电路和系统,用于在具有子载波子帧的帧结构中布置导频序列(用于帮助接收机估计信道),以及 符号位置。 公共导频序列的位置是预定的,并且包括1)在每个子帧中,针对至少两个交错的子载波中的每一个,在第一码元位置中布置导频序列,以及2)在至少一个子帧中, 序列被设置在不同于第一符号位置的位置以及不同于至少两个交错副载波中的任何一个的副载波中。 响应于通过无线链路接收的信道质量的指示来设置专用导频序列,其在帧中的位置不是预定的。 公共导频序列可以涉及一个或两个发射天线,并且专用导频序列可以允许添加第三和第四发射天线。