Title :
Combined multi-amplitude and multi-dimensional digital communication systems
Author :
Drakul, Spase L.
Author_Institution :
Dipartimento di Elettronica, Politecnico di Torino, Italy
Abstract :
The paper relates to the channel coding and transmission of the coded signals over bandlimited channels in the presence of additive white Gaussian noise (AWGN). The authors demonstrate a way for designing modulational codes with a sampling receiver with limited complexity. Combining multi-amplitude and multi dimensional systems into a digital communication system having both good power efficiency and good spectral efficiency is described. Advantages and simple hardware results of a modulation scheme, called 4A8DS (4-amplitudes, 8-dimensional signaling), in comparison with the 64-QAM scheme is demonstrated. A coding gain of 4.3 dB at Eb/N0=10-4 with spectral efficiency of 5 bit/s/Hz is obtained
Keywords :
Gaussian channels; amplitude modulation; channel coding; digital communication; modulation coding; receivers; signal sampling; telecommunication signalling; transmitters; 4-amplitudes 8-dimensional signaling; 4.3 dB; 4A8DS; additive white Gaussian noise; bandlimited channels; channel coding; coded signals; coding gain; combined multi-amplitude and multi-dimensional digital communication systems; modulational codes; sampling receiver; spectral efficiency; AWGN channels; Additive white noise; Bandwidth; Channel coding; Constellation diagram; Digital communication; Gain; RF signals; Redundancy; Sampling methods;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1994. Wireless Networks - Catching the Mobile Future., 5th IEEE International Symposium on
Conference_Location :
The Hague
Print_ISBN :
90-5199-193-2
DOI :
10.1109/WNCMF.1994.529154
