一种用于DVB-S2系统QPSK - 8PSK解调的新型低复杂度软判决demapper

2011 IEEE International Conference of Electron Devices and Solid-State Circuits Pub Date : 2011-12-29 DOI:10.1109/EDSSC.2011.6117701

Jianing Su, Zhenghao Lu, Xiaopeng Yu, Changhui Hu

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引用次数: 5

摘要

针对DVB-S2标准中8PSK解调的对数似然比(llr)，提出了一种高效、低复杂度的软判决demapper算法。该方法具有线性复杂度，避免了经典方法中的多次平方运算，与传统的LLR计算算法相比，比较选择运算次数减少了一半。该方法在Altera FPGA上得到了验证。

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A novel low complexity soft-decision demapper for QPSK 8PSK demodulation of DVB-S2 systems

This paper provides an efficient low complexity soft-decision demapper algorithm for computing the log-likelihood-ratios (LLRs) of the 8PSK demodulations in the DVB-S2 standard. The proposed method has linear complexity, avoids the multiple square operations in the classical method and reduces the number of compare-select operations by half compared to traditional LLR computation algorithms. The demapper using the proposed method has been verified on Altera FPGA.

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来源期刊

2011 IEEE International Conference of Electron Devices and Solid-State Circuits

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