Title :
Blind Modulation Classification Algorithm for Single and Multiple-Antenna Systems Over Frequency-Selective Channels
Author :
Marey, Mohamed ; Dobre, Octavia A.
Author_Institution :
Fac. of Electron. Eng., Menoufyia Univ., Menouf, Egypt
Abstract :
This letter proposes a blind modulation classification (MC) algorithm applicable to single and multiple-antenna systems operating over frequency-selective channels. We show that the correlation functions of the received signals for certain modulation formats exhibit peaks at a particular set of time lags, a result which can be exploited as a discriminating feature. We also develop a new hypothesis test in order to detect the correlation-induced peaks. The proposed algorithm is general in the sense that it accommodates any number of transmit- and receive-antennas, without prior information about channel statistics. The classification performance of the proposed algorithm is assessed through Monte Carlo simulations.
Keywords :
Monte Carlo methods; antenna arrays; modulation; pattern classification; receiving antennas; transmitting antennas; wireless channels; MC algorithm; Monte Carlo simulations; blind modulation classification algorithm; channel statistics; correlation functions; correlation-induced peak detection; frequency-selective channels; multiple-antenna systems; receiving antennas; single-antenna system; transmitting antennas; Binary phase shift keying; Correlation; MIMO; Signal processing algorithms; Wireless communication; Intelligent radios; modulation classification; statistical moments;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2014.2323241