Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system
    6.
    发明申请
    Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system 有权
    多天线正交频分复用通信系统中自适应比特加载的系统和方法

    公开(公告)号:US20050147076A1

    公开(公告)日:2005-07-07

    申请号:US10750587

    申请日:2003-12-29

    摘要: In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels. Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath characteristics of the spatial channel allowing the communication of additional data without an increase in frequency bandwidth. Space-frequency subcarrier modulation assignments may be dynamically assigned on a per subcarrier basis as well as a per spatial channel basis to help maximize the data-carrying capacity of the channel. In some embodiments, each of the spatial channels may be associated with one of a plurality of spatially diverse antennas. In other embodiments, beamforming may be performed to allow the transmission and/or reception of signals within the spatial channels.

    摘要翻译: 在正交频分复用(OFDM)系统中,发射机和/或接收机在非正交空间信道上传送单独的数据流。 每个空间信道可以使用相同的OFDM子载波集合,并且可以利用空间信道的多径特性,允许附加数据的通信而不增加频带宽度。 可以在每个子载波基础上以及每个空间信道基础上动态分配空频子载波调制分配,以帮助最大化信道的数据承载能力。 在一些实施例中,每个空间信道可以与多个空间多样的天线中的一个相关联。 在其他实施例中,可以执行波束成形以允许空间信道内的信号的发送和/或接收。