This paper proposes a coded modulation scheme based on frequency shift keying (FSK) modulation and a simple binary permutation code. FSK detection is based on the knowledge of the probability density function (PDF) of the noise and the attenuation of the channel, called FSK “Soft‐Decision” (FSK/SD) detection. We introduce an approximation of the FSK/SD, called FSK “Select Largest” (FSK/SL). We compare the FSK/SL detection with the classical PDF‐based detection techniques, such as FSK/SD and spread‐FSK (SFSK), for both coded and uncoded transmission. As a practical application, we use the power line communication (PLC) channel. We analyze and compare the performances for a narrowband PLC channel with attenuation and impulse noise.

中文翻译：

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一种新的二进制编码频移键控调制的低复杂度译码方法

本文提出了一种基于频移键控 (FSK) 调制和简单的二进制置换码的编码调制方案。FSK 检测基于噪声和信道衰减的概率密度函数 (PDF) 的知识，称为 FSK“软判决”(FSK/SD) 检测。我们引入了 FSK/SD 的近似值，称为 FSK“选择最大”（FSK/SL）。我们将 FSK/SL 检测与经典的基于 PDF 的检测技术（例如 FSK/SD 和扩展 FSK（SFSK））进行比较，用于编码和未编码传输。作为实际应用，我们使用电力线通信 (PLC) 通道。我们分析并比较了具有衰减和脉冲噪声的窄带 PLC 通道的性能。