TY - GEN
T1 - A novel method for binary chirp-rate modulation and demodulation
AU - Deng, Bing
AU - Tao, Ran
AU - Chen, Enqing
PY - 2006
Y1 - 2006
N2 - Chirp-rate modulation (CRM) is a kind of technique of spread spectrum which has the ability of anti-multipath and anti-interception. Meanwhile as a modulation method, CRM can be combined with other spread spectrum methods to compose a hybrid-spread-spectrum scheme and increase the system capability. In this paper, the method for binary CRM based on the fractional Fourier transform is investigated, and a convenient noncoherent demodulation method is presented. The peak of the output of the demodulator is derived. And the effect of Doppler shift is analyzed, which shows the inherent immunity against Doppler shift. Finally, simulation results show that the performance of this proposed method is worse than optimal matched demodulation by about 3 dB, but without needing of rigorous phase synchronization.
AB - Chirp-rate modulation (CRM) is a kind of technique of spread spectrum which has the ability of anti-multipath and anti-interception. Meanwhile as a modulation method, CRM can be combined with other spread spectrum methods to compose a hybrid-spread-spectrum scheme and increase the system capability. In this paper, the method for binary CRM based on the fractional Fourier transform is investigated, and a convenient noncoherent demodulation method is presented. The peak of the output of the demodulator is derived. And the effect of Doppler shift is analyzed, which shows the inherent immunity against Doppler shift. Finally, simulation results show that the performance of this proposed method is worse than optimal matched demodulation by about 3 dB, but without needing of rigorous phase synchronization.
UR - http://www.scopus.com/inward/record.url?scp=34249277084&partnerID=8YFLogxK
U2 - 10.1109/ICOSP.2006.345831
DO - 10.1109/ICOSP.2006.345831
M3 - Conference contribution
AN - SCOPUS:34249277084
SN - 0780397371
SN - 9780780397378
T3 - International Conference on Signal Processing Proceedings, ICSP
BT - 8th International Conference on Signal Processing, ICSP 2006
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Signal Processing, ICSP 2006
Y2 - 16 November 2006 through 20 November 2006
ER -
