Title :
Detection of multicarrier modulations using 4th-order cumulants
Author :
Akmouche, Walter
Author_Institution :
TCOM/GR-BP 7, Centre d´´Electron. de l´´Armement, Bruz, France
fDate :
6/21/1905 12:00:00 AM
Abstract :
This paper deals with modulation classification. Our goal is to discriminate single-carrier (SC) modulations from multicarrier (MC) modulations of OFDM type. Because MC modulations are asymptotically Gaussian, we propose here a detector using the statistical test of Giannakis and Tsatsanis (1990) based on fourth-order cumulants. This test is here adapted to the specific case of digital modulations which allows one to reduce the algorithm complexity. Simulations are provided and show that in the worst case (filtered 256-QAM versus 32-OFDM) the detector achieves a probability of detection Pd=0.99 for a probability of false alarm Pfa=10-2
Keywords :
Gaussian processes; OFDM modulation; computational complexity; probability; quadrature amplitude modulation; signal classification; signal detection; 32-OFDM; 4th-order cumulants; OFDM; algorithm complexity reduction; asymptotically Gaussian modulation; detection probability; digital modulation; filtered 256-QAM; fourth-order cumulants; modulation classification; modulation recognition; multicarrier modulation detection; simulations; single-carrier modulation; statistical test; Chirp modulation; Detectors; Digital modulation; Frequency division multiplexing; Frequency shift keying; OFDM modulation; Phase shift keying; Pulse modulation; Quadrature amplitude modulation; Testing;
Conference_Titel :
Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-5538-5
DOI :
10.1109/MILCOM.1999.822720
