Experimental Wireless Communication Using Chaotic Baseband Waveform

TY - JOUR

T1 - Experimental Wireless Communication Using Chaotic Baseband Waveform

AU - Yao, Jun-Liang

AU - Sun, Yu-Zhe

AU - Ren, Hai-Peng

AU - Grebogi, Celso

N1 - This work was supported by NSFC under Grants 61401354, 61172070, and 61502385, in part by the Key Basic Research Fund of Shaanxi Province under Grant 2016ZDJC0067, in part by the Natural Science Basic Research Plan in Shaanxi Province of China under Grant 2016JQ6015, in part by the Scientific and Technological Innovation Leading Talents Program of Shaanxi Province, and in part by the Foundation of Shaanxi Educational Committee under Grant 17JS086.

PY - 2019/1

Y1 - 2019/1

N2 - Some new properties of the chaotic signal have been implemented in communication system applications recently, which include the following. First, chaos is proven to be the optimal communication waveform in the sense of very simple matched filter being used to achieve maximum signal to noise ratio; second, the amount of information contained in a chaotic signal is unaltered by a wireless multipath channel; and third, chaos property can be used to resist multipath effect. All these support the application of chaos in a practical communication system. However, due to the broadband property of the chaotic signal, it is very difficult for a practical transducer or antenna to convert such a broadband signal into a signal that would be suitable for practical band-limited wireless channel. Thus, the use of chaos property to improve the performance of conventional communication system without changing the system configuration becomes a critical issue in communication with chaos. In this paper, chaotic baseband waveform generated by a chaotic shaping filter is used to show that this difficulty can be overcome. The generated continuous-time chaotic waveform is proven to be topologically conjugate to a symbolic sequence, allowing the encoding of arbitrary information sequence into the chaotic waveform. A finite impulse response filter is used to replace the impulse control in order to encode information into the chaotic signal, simplifying the algorithm for high-speed communication. A wireless communication system is being proposed using the chaotic signal as the baseband waveform, which is compatible with the general wireless communication platform. The matched filter and decoding method, using chaos properties, enhance the communication system performance. The bit error rate (BER) and computational complexity performances of the proposed wireless communication system are analyzed and compared with the conventional wireless systems. The results show that the proposed chaotic baseband waveform of our wireless communication method has better BER performance in both the static and time-varying wireless channels. The experimental results, based on the commonly used wireless open-access research platform, show that the BER of the proposed method is superior to the conventional method under a practical wireless multipath channel.

AB - Some new properties of the chaotic signal have been implemented in communication system applications recently, which include the following. First, chaos is proven to be the optimal communication waveform in the sense of very simple matched filter being used to achieve maximum signal to noise ratio; second, the amount of information contained in a chaotic signal is unaltered by a wireless multipath channel; and third, chaos property can be used to resist multipath effect. All these support the application of chaos in a practical communication system. However, due to the broadband property of the chaotic signal, it is very difficult for a practical transducer or antenna to convert such a broadband signal into a signal that would be suitable for practical band-limited wireless channel. Thus, the use of chaos property to improve the performance of conventional communication system without changing the system configuration becomes a critical issue in communication with chaos. In this paper, chaotic baseband waveform generated by a chaotic shaping filter is used to show that this difficulty can be overcome. The generated continuous-time chaotic waveform is proven to be topologically conjugate to a symbolic sequence, allowing the encoding of arbitrary information sequence into the chaotic waveform. A finite impulse response filter is used to replace the impulse control in order to encode information into the chaotic signal, simplifying the algorithm for high-speed communication. A wireless communication system is being proposed using the chaotic signal as the baseband waveform, which is compatible with the general wireless communication platform. The matched filter and decoding method, using chaos properties, enhance the communication system performance. The bit error rate (BER) and computational complexity performances of the proposed wireless communication system are analyzed and compared with the conventional wireless systems. The results show that the proposed chaotic baseband waveform of our wireless communication method has better BER performance in both the static and time-varying wireless channels. The experimental results, based on the commonly used wireless open-access research platform, show that the BER of the proposed method is superior to the conventional method under a practical wireless multipath channel.

KW - experimental wireless communication

KW - multipath channel

KW - chaos

KW - basis function

KW - wireless open-access research platform

KW - Experimental wireless communication

KW - chaotic shaping filter

KW - matched filter

UR - http://www.scopus.com/inward/record.url?scp=85057172076&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/experimental-wireless-communication-using-chaotic-baseband-waveform

U2 - 10.1109/TVT.2018.2882422

DO - 10.1109/TVT.2018.2882422

M3 - Article

VL - 68

SP - 578

EP - 591

JO - IEEE Transactions on Vehicular Technology

JF - IEEE Transactions on Vehicular Technology

SN - 0018-9545

IS - 1

ER -