A multirate transmission scheme to mitigate intersymbol interference (ISI) is proposed in this paper. The proposed method first decomposes the channel into two half-rate subchannels by employing successive interference cancellation (SIC). Then the channel is further decomposed into 2M parallel channels by applying the method recursively. We demonstrate that these sub-channels tend to become memoryless as M increases. The proposed reception algorithm can be implemented in frequency domain and thus, it has a complexity in the order of linear equalizers. The proposed transmission scheme does not employ any sort of linear pre-coding at the transmitter. Therefore, it does not increase the peak-to-average power ratio at all. Furthermore, the proposed transmission method can surpass even the genie aided decision feedback equalizer in terms of reliable throughput and it can get quite close to independent identically distributed (i.i.d.) capacity of the channel which is a quite important achievement for a practical equalizer.
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机译：本文提出了一种减轻码间干扰（ISI）的多速率传输方案。所提出的方法首先通过采用连续干扰消除（SIC）将信道分解为两个半速率子信道。然后，通过递归地应用该方法，将信道进一步分解为2 M 个并行信道。我们证明，随着M的增加，这些子通道趋于变得无记忆。所提出的接收算法可以在频域中实现，因此，它具有线性均衡器顺序的复杂性。所提出的传输方案在发射机处不采用任何类型的线性预编码。因此，它根本不会增加峰均功率比。此外，在可靠的吞吐量方面，所提出的传输方法甚至可以超过精灵辅助决策反馈均衡器，并且它可以非常接近信道的独立均匀分布（i.i.d.）容量，这对于实际均衡器而言是非常重要的成就。
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