DocumentCode :
3090942
Title :
Multiple Chirp-Rate Modulation Based on Fractional Fourier Transform
Author :
Zhao, Qi-Ming ; Zhang, Qin-yu ; Zhang, Nai-Tong
Author_Institution :
Sch. of Electron. & Inf. Technol., Harbin Inst. of Technol., Harbin, China
fYear :
2010
fDate :
17-19 Sept. 2010
Firstpage :
688
Lastpage :
691
Abstract :
A novel modulation scheme called Multiple Chirp-rate-Shift Keying (MCrSK) is proposed, which uses different chirp-rates to represent symbols. Due to the Fractional Fourier Transform (FrFT) properties of the chirp signals, a noncoherent demodulation method of MCrSK based on FrFT is available. Results of simulation indicate that MCrSK acquires better Bit Error Rate (BER) performance than MPSK in higher modulation order cases and better power efficiency than MQAM due to its constant envelope property. Further, keying of central frequencies of chirp signal can also be utilized with MCrSK to achieve a hybrid modulation, providing diverse trade-off ways between BER and spectrum efficiency.
Keywords :
Fourier transforms; chirp modulation; error statistics; bit error rate; fractional Fourier transform; multiple chirp-rate modulation; noncoherent demodulation method; spectrum efficiency; Bit error rate; Chirp; Demodulation; Fourier transforms; Frequency modulation; Time frequency analysis; Chirp; Chirp-rate modulation; Fractional Fourier Transform; Multiple Chirp-rate-Shift Keying (MCrSK); hybrid modulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Pervasive Computing Signal Processing and Applications (PCSPA), 2010 First International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-8043-2
Electronic_ISBN :
978-0-7695-4180-8
Type :
conf
DOI :
10.1109/PCSPA.2010.171
Filename :
5636019
Link To Document :
بازگشت