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Bipolar chaotic pulse position modulation communication system based on cyclic LDPC

Li, Hui, Liu, Hanyu and Vafi, Sina (2014). Bipolar chaotic pulse position modulation communication system based on cyclic LDPC. EURASIP Journal on Wireless Communications and Networking,2014(105).

Document type: Journal Article
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IRMA ID 75039815xPUB261
Title Bipolar chaotic pulse position modulation communication system based on cyclic LDPC
Author Li, Hui
Liu, Hanyu
Vafi, Sina
Journal Name EURASIP Journal on Wireless Communications and Networking
Publication Date 2014
Volume Number 2014
Issue Number 105
ISSN 1687-1499   (check CDU catalogue open catalogue search in new window)
Total Pages 9
HERDC Category C1 - Journal Article (DIISR)
Abstract To overcome the error propagation and improve the communication efficiency of the chaotic pulse position modulation (CPPM) system, the bipolar chaotic pulse position modulation (BCPPM) communication system is proposed here. In BCPPM, every two-bit data are set as a group. The first bit and the discrete chaotic map determine the position of sent pulse, while the second bit determines the polarity of sent pulse. Each pulse in the channel contains two-bit information, so this scheme improves the communication efficiency. A (255,175) cyclic low-density parity-check code (LDPC) was designed, and its generator matrix and parity check matrix are cycled. Furthermore, the constructed BCPPM communication system is utilized in the cyclic LDPC aiming to mitigate the effect of noise. In the transmitter, it uses the encoder structure of cyclic codes while the min-sum algorithm is deployed to decode in the receiver. The analysis indicates that the proposed system is secure, insensitive to the channel distortion and convenient for multiple access communication. The simulation results show that in the additive white Gaussian noise (AWGN) channel, multipath channel, multiuser model, and hybrid communication environment, the BCPPM system has lower bit error rate (BER) compared with those of the CPPM and chaotic pulse on-off-keying (CPOOK). In addition, using cyclic LDPC codes, the system is more suitable for hardware implementation.
Keywords Chaotic pulse position modulation
Multipath channel
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Additional Notes This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Description for Link Link to CC Attribution 2.0 License

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