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تسجيل مستخدم جديدMultilevel-Coded Pulse-Position Modulation for Covert Communications over Binary-Input Discrete Memoryless Channels
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نشر من قبل
Ishaque Ashar Kadampot
تاريخ النشر
2018
مجال البحث
الهندسة المعلوماتية
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English
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We develop a low-complexity coding scheme to achieve covert communications over binary-input discrete memoryless channels (BI-DMCs). We circumvent the impossibility of covert communication with linear codes by introducing non-linearity through the use of pulse position modulation (PPM) and multilevel coding (MLC). We show that the MLC-PPM scheme exhibits many appealing properties; in particular, the channel at a given index level remains stationary as the number of level increases, which allows one to use families of channel capacity- and channel resolvability-achieving codes to concretely instantiate the covert communication scheme.
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اقرأ أيضاً
We show that the Extrinsic Information about the coded bits of any good (capacity achieving) code operating over a wide class of discrete memoryless channels (DMC) is zero when channel capacity is below the code rate and positive constant otherwise,
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