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    • 76. 发明申请
    • Method and adaptive bit interleaver for wideband systems using adaptive bit loading
    • 使用自适应位加载的宽带系统的方法和自适应比特交织器
    • US20050135493A1
    • 2005-06-23
    • US10740170
    • 2003-12-18
    • Alexander MaltsevAli SadriAlexei Davydov
    • Alexander MaltsevAli SadriAlexei Davydov
    • H04L1/00H04L27/26H04K1/10
    • H04L1/0071H04L1/0042H04L27/2608H04L27/2628
    • An adaptive interleaver for wideband orthogonal frequency division multiplexed (OFDM) communications permutes a variable number of coded bits per OFDM symbol (Ncbps). The variable number of coded bits is calculated based on individual subcarrier modulation assignments for orthogonal subcarriers of a wideband channel. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels that comprise the wideband channel. The interleaver may add padding bits to the interleaver matrix to fill any remaining positions, and after performing an interleaving operation, the interleaver may prune the padding bits to provide a sequence of interleaved bits for subsequent modulation on the orthogonal subcarriers. A receiver may include an adaptive deinterleaver to reverse the process.
    • 用于宽带正交频分复用(OFDM)通信的自适应交织器将每OFDM符号的可变数量的编码比特(Ncbps)置换。 基于宽带信道的正交子载波的各个子载波调制分配来计算编码比特的可变数目。 交织器矩阵大小可以基于每OFDM符号的可变数量的编码比特和构成宽带信道的子信道的数量。 交织器可以向交织器矩阵添加填充比特以填充任何剩余的位置,并且在执行交织操作之后,交织器可以修剪填充比特以提供交织的比特序列以用于正交子载波上的后续调制。 接收机可以包括自适应解交织器来反转该过程。