Title :
On the Blind Equalization of Continuous Phase Modulated Signals Using the Constant Modulus Criterion
Author :
Bianchi, Pascal ; Loubaton, Philippe
Author_Institution :
Departement Telecommun., Ecole Superieure d´´Electricite, Gif-sur-Yvette
fDate :
3/1/2007 12:00:00 AM
Abstract :
The use of the constant modulus (CM) criterion to achieve blind equalization of continuous phase modulated (CPM) signals is investigated in this paper. Solutions to the CM criterion are characterized. It is shown that blind equalization using the CM criterion may be unsuccessful in the sense that the output of the equalizer does not necessarily coincides with a delayed and rotated version of the input signal. An indeterminacy indeed remains and this residual indeterminacy is characterized. As an application of our results, a blind equalization criterion that allows us to eliminate the latter indeterminacy is proposed. Simulation results sustain theoretical claims and illustrate the attractive performance of the proposed criterion
Keywords :
continuous phase modulation; equalisers; signal processing; blind equalization; constant modulus criterion; continuous phase modulated signals; Blind equalizers; Continuous phase modulation; Delay; GSM; Military communication; Mobile communication; Phase modulation; Signal analysis; Signal processing; Signal processing algorithms; Blind equalization; constant modulus (CM) criterion; continuous phase modulation (CPM);
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2006.887110