Title :
An improved OFDM chirp waveform design
Author :
Mingyang Zhou ; Huaiyuan Liu ; Weizhe Liu ; Yumeng Gu
Author_Institution :
Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Orthogonal frequency division multiplexing (OFDM) chirp waveform has good correlation and time-bandwidth product performance, but it offers only two orthogonal signals. In this paper, we propose an improved OFDM chirp waveform based on traditional linear frequency modulation waveform as well as using OFDM to conduct the multi-carrier modulation, which can be used for multiple-input multiple-output (MIMO)radar imaging. We also analyzed the performance of the designed OFDM Chirp signals with correlation function and ambiguity function. It is shown that the designed OFDM chirp waveform has satisfactory performance for MIMO radar imaging.
Keywords :
MIMO radar; OFDM modulation; frequency modulation; radar imaging; radar signal processing; MIMO radar imaging; OFDM chirp waveform design; linear frequency modulation waveform; multicarrier modulation; multiple-input multiple-output radar imaging; orthogonal frequency division multiplexing; orthogonal signal; time-bandwidth product performance; Bandwidth; Chirp; Correlation; Equations; OFDM; Radar; Time-domain analysis; OFDM; OFDM Chirp; ambiguity function; linear frequency modulation; waveform design; waveform diversity;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE), 2013 IEEE 5th International Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-6077-7
DOI :
10.1109/MAPE.2013.6689938
