Title :
Transform modulations for mobile communications
Author :
Lamarca, M. ; Vazquez, G.
Author_Institution :
Dept. de Teoria del Senyal i Comunicacions, Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
A new modulation scheme called transform modulations is proposed which improves the system performance in frequency-flat fading mobile channels. They ameliorate the effect of the fadings over the transmitted signal by spreading the information in time, using a linear transform operator. The design of this scheme is discussed and its advantages are shown by means of simulations. The relationship of this scheme with OFDM modulation is also analyzed
Keywords :
fading; frequency division multiplexing; land mobile radio; modulation; transforms; OFDM modulation; design; frequency-flat fading mobile channels; linear transform operator; mobile communications; modulation scheme; system performance; transform modulations; transmitted signal; Bandwidth; Decision feedback equalizers; Discrete Fourier transforms; Fading; Mobile communication; OFDM modulation; Phase shift keying; Postal services; Quadrature amplitude modulation; Robustness;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.631042
