Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate
In this paper, a differential chaotic shift keying communication system based on noise reduction with orthogonal double bit rate (NR-ODBR-DCSK) is proposed. The system incorporates Walsh orthogonalization at the transmitter side to orthogonalize the information signals so that two mutually orthogona...
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2024-11-01
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| author | Yao Fu Qihao Yu Hongda Li |
| author_facet | Yao Fu Qihao Yu Hongda Li |
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| description | In this paper, a differential chaotic shift keying communication system based on noise reduction with orthogonal double bit rate (NR-ODBR-DCSK) is proposed. The system incorporates Walsh orthogonalization at the transmitter side to orthogonalize the information signals so that two mutually orthogonal signals can be superimposed. At the receiving end, because the principle of orthogonal signals is used, it achieves the characteristic of double information transmission rate for information signal transmission while avoiding the problem of chaotic synchronization. In addition, the system employs a noise reduction transmission mechanism, which reduces the noise variance in the received signal, further reducing the BER of the system and thus improving the performance of the communication system. By analyzing the signal format of the system, the transmitter and receiver structures of the communication system are designed. Subsequently, theoretical analyses and simulations in an additive white Gaussian noise (AWGN) channel demonstrate the good performance of the system, including a low bit error rate (BER) and a good data-energy to bit-energy ratio (DBR). Finally, a simulation test of the NR-ODBR-DCSK system for a semi-physical communication system was carried out using two USRP devices to verify the experimental feasibility of the system. The simulation analysis results show that comparative analyses with conventional DCSK and SR-DCSK systems highlight the superior performance of the NR-ODBR-DCSK system. |
| format | Article |
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| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-094a9f9b79e34b9f8df4b606683c4a122024-11-26T17:49:55ZengMDPI AGApplied Sciences2076-34172024-11-0114221072310.3390/app142210723Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit RateYao Fu0Qihao Yu1Hongda Li2College of Information Science & Engineering, Shenyang Ligong University, Shenyang 110159, ChinaCollege of Information Science & Engineering, Shenyang Ligong University, Shenyang 110159, ChinaCollege of Information Science & Engineering, Shenyang Ligong University, Shenyang 110159, ChinaIn this paper, a differential chaotic shift keying communication system based on noise reduction with orthogonal double bit rate (NR-ODBR-DCSK) is proposed. The system incorporates Walsh orthogonalization at the transmitter side to orthogonalize the information signals so that two mutually orthogonal signals can be superimposed. At the receiving end, because the principle of orthogonal signals is used, it achieves the characteristic of double information transmission rate for information signal transmission while avoiding the problem of chaotic synchronization. In addition, the system employs a noise reduction transmission mechanism, which reduces the noise variance in the received signal, further reducing the BER of the system and thus improving the performance of the communication system. By analyzing the signal format of the system, the transmitter and receiver structures of the communication system are designed. Subsequently, theoretical analyses and simulations in an additive white Gaussian noise (AWGN) channel demonstrate the good performance of the system, including a low bit error rate (BER) and a good data-energy to bit-energy ratio (DBR). Finally, a simulation test of the NR-ODBR-DCSK system for a semi-physical communication system was carried out using two USRP devices to verify the experimental feasibility of the system. The simulation analysis results show that comparative analyses with conventional DCSK and SR-DCSK systems highlight the superior performance of the NR-ODBR-DCSK system.https://www.mdpi.com/2076-3417/14/22/10723differential chaotic shift keyingWalsh orthogonalizationadditive white Gaussian noiseUSRPbit error rate |
| spellingShingle | Yao Fu Qihao Yu Hongda Li Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate Applied Sciences differential chaotic shift keying Walsh orthogonalization additive white Gaussian noise USRP bit error rate |
| title | Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate |
| title_full | Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate |
| title_fullStr | Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate |
| title_full_unstemmed | Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate |
| title_short | Design of a Differential Chaotic Shift Keying Communication System Based on Noise Reduction with Orthogonal Double Bit Rate |
| title_sort | design of a differential chaotic shift keying communication system based on noise reduction with orthogonal double bit rate |
| topic | differential chaotic shift keying Walsh orthogonalization additive white Gaussian noise USRP bit error rate |
| url | https://www.mdpi.com/2076-3417/14/22/10723 |
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