Title :
A chaos-based phase-coded OFDM signal for joint radar-communication systems
Author :
Jingjing Zhao ; Kai Huo ; Xiang Li
Author_Institution :
Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
In this paper, a phase-coded OFDM signal based on chaos theory for joint radar-communication systems is proposed. The signal has high time-frequency product and flexibility in waveform design. A new approach of getting phase codes from chaotic sequences is introduced, and the new codes own good correlation performance. The peak-to-mean envelope power ratio (PMEPR) and the auto-correlation function (ACF) are two important indexes of the signal. PMEPR is decreased to a pretty low level by specific sub-carrier weighing method through systematically research in this paper, while the side-lobe level of ACF of the signal is demonstrated to be relatively low using the sub-carrier complex weight and chaos-based phase code.
Keywords :
OFDM modulation; chaotic communication; correlation methods; phase coding; radar signal processing; radiocommunication; ACF; PMEPR; autocorrelation function; chaos theory; chaos-based phase code; chaotic sequences; correlation performance; joint radar-communication systems; peak-to-mean envelope power ratio; phase-coded OFDM signal; subcarrier complex weight; subcarrier weighing method; time-frequency product; Chaotic communication; Correlation; Encoding; OFDM; Radar cross-sections; ACF; PC-OFDM signal; PMEPR; chaos-based coding; joint radar-communication system;
Conference_Titel :
Signal Processing (ICSP), 2014 12th International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-2188-1
DOI :
10.1109/ICOSP.2014.7015343
