Title :
Maximizing minimum Euclidean distance of spectrally constrained partial response CPM
Author :
Svensson, Tommy ; Svensson, Ame
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Optimized phase pulses, which maximizes the minimum Euclidean distance of spectrally constrained partial response CPM with different pulse lengths and different alphabet sizes, are numerically found. The channel is specified by a narrow spectrum mask, which puts hard requirements on both the width of the spectral main lobe and the size of the spectral side lobes, and AWGN. The phase pulse is parameterized by equidistant sample points, which are connected by cubic spline interpolation and the modulation index is also treated as a parameter. A gain of up to 0.9 dB is obtained compared to GMSK. In addition, some of the new phase pulses provide an advantage for reduced state sequence detection
Keywords :
AWGN channels; continuous phase modulation; interpolation; optimisation; partial response channels; splines (mathematics); AWGN; GMSK; continuous phase modulation; cubic spline interpolation; equidistant sample points; gain; maximization; minimum Euclidean distance; modulation index; narrow spectrum mask; optimized phase pulses; reduced state sequence detection; spectral main lobe; spectral side lobes; spectrally constrained partial response CPM; Bandwidth; Euclidean distance; Interpolation; Maximum likelihood detection; Phase detection; Pulse amplifiers; Pulse modulation; Pulse shaping methods; Shape; Spline;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944583
