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Table 2 Transmitter system complexity analysis (for one information bits)

From: A new scheme to enhance the performance of permutation index–differential chaos shift keying communications system

Unit DCSK CDSK HE-DCSK TR-DCSK SR-PI-DCSK
Adders 0 1 1 1 0
Multipliers 1 1 1 1 0
Delay 1 1 1 0 L
Modulator 1 1 1 1 0
DPU\(^{\mathrm {a}}\) 0 0 0 1 L
  1. \(^{\mathrm {a}}\)DPU data permutation unit (including the time reversal unit)