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    • 2. 发明授权
    • Method and apparatus for decoding baseband orthogonal frequency division multiplex signals
    • 用于解码基带正交频分复用信号的方法和装置
    • US07418049B2
    • 2008-08-26
    • US10160917
    • 2002-06-03
    • Bradley Wallace
    • Bradley Wallace
    • H04L27/28H04J11/00
    • H04L25/067H04L27/2647
    • A method and apparatus for decoding baseband OFDM signals include processing that begins by slicing each sub-carrier signal of the OFDM signal into a plurality of error terms. The particular number of error terms generated for each sub-carrier signal depends on the constellation size of the data being carried by each of the sub-carrier signals. The error terms for each sub-carrier signal corresponds to the nearest constellation point having a zero or one in the I or Q direction. The process continues by grouping individual error terms of the plurality of error terms for each sub-carrier signal to produce a plurality of error terms. The processing then continues by de-interleaving each of the plurality of error term groups to produce a corresponding plurality of de-interleaved error term groups. The processing then continues by interpreting the plurality of de-interleaved error term groups to produce a plurality of data values, each of the data values corresponds to data encoded within each of the sub-carrier signals.
    • 用于解码基带OFDM信号的方法和装置包括通过将OFDM信号的每个子载波信号分片成多个误差项开始的处理。 为每个子载波信号产生的误差项的特定数量取决于每个副载波信号承载的数据的星座大小。 每个子载波信号的误差项对应于在I或Q方向上具有零或一个的最近的星座点。 该过程通过将每个子载波信号的多个误差项的各个误差项分组以产生多个误差项来继续。 然后,该处理继续通过对多个误差项组中的每一个进行解交织以产生相应的多个解交错误差项组。 然后,该处理继续解释多个解交错误差项组以产生多个数据值,每个数据值对应于在每个子载波信号内编码的数据。