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Zbl 1242.94003
Nguyen Xuan Quyen; Vu Van Yem; Thang Manh Hoang
A chaotic pulse-time modulation method for digital communication. (English)
[J] Abstr. Appl. Anal. 2012, Article ID 835304, 15 p. (2012). ISSN 1085-3375; ISSN 1687-0409/e

Summary: We present and investigate a method of chaotic pulse-time modulation (PTM) named chaotic pulse-width-position modulation (CPWPM) which is the combination of pulse-position-modulation (PPM) and pulse-width modulation (PWM) with the inclusion of chaos technique for digital communications. CPWPM signal is in the pulse train format, in which binary information is modulated onto chaotically-varied intervals of position and width of pulses, and therefore two bits are encoded on a single pulse. The operation of the method is described and the theoretical evaluation of bit-error rate (BER) performance in the presence of additive white Gaussian noise (AWGN) is provided. In addition, the chaotic behavior with tent map and its effect on average parameters of the system are investigated. Theoretical estimation and numerical simulation of a CPWPM system with specific parameters are carried out in order to verify the performance of the proposed method.

MSC 2000:: *94A05 Communication theory
94A14 Modulation and demodulation

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