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8K mode interleaver with odd interleaving only and per OFDM symbol permutation code change in a digital video broadcasting (DVB) standard

机译:8K模式交织器,仅奇数交织,并且在数字视频广播(DVB)标准中每个OFDM符号置换码发生变化

摘要

A data processing apparatus maps input symbols to be communicated onto a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit.
机译:数据处理设备将要通信的输入符号映射到正交频分复用(OFDM)符号的预定数量的子载波信号上。数据处理器包括交织器存储器,该交织器存储器读入预定数量的数据符号以映射到OFDM子载波信号上。交织器存储器将数据符号读出到OFDM子载波上以实现映射,其中读出的顺序与读出的顺序不同,该顺序是从一组地址中确定的,其效果是数据符号被交织到子载波信号上。地址集是由地址生成器生成的,该地址生成器包括线性反馈移位寄存器和置换电路。

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