Title :
Optimum number of signal alternatives in mobile cellular systems
Author :
Malm, Peter ; Maseng, Torleiv
Author_Institution :
Dept. of Appl. Electron., Lund Univ., Sweden
Abstract :
An attempt is made to determine the “best” modulation scheme for land mobile radio systems. This is done by optimizing spectrum efficiency which considers carried traffic, bandwidth and cluster size. The result shows that 4-PSK, 8 and 16-QAM exhibit similar performance in an uncoded system. Considering that it is desirable to use a constant envelope, 4-PSK appears to be the winner
Keywords :
Rayleigh channels; cellular radio; cochannel interference; optimisation; phase shift keying; quadrature amplitude modulation; spectral analysis; telecommunication traffic; 16-QAM; 4-PSK; 8-QAM; bandwidth; cluster size; cochannel interference; constant envelope; land mobile radio systems; mobile cellular systems; modulation; performance; signal alternatives; slow Rayleigh fading; spectrum efficiency; synchronization; traffic; uncoded system; AWGN; Additive noise; Attenuation; Bit error rate; Constellation diagram; Error probability; Fading; Gaussian noise; Rayleigh channels; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686379
