Title :
Asymmetric-raised-cosine frequency shift keying (ARC-FSK)-a new modulation with superior anti-multipath characteristics for mobile and personal communications systems
Author :
Leung, Patrick S K
Author_Institution :
Dept. of Electr. & Electron. Eng., Victoria Univ. of Technol., Melbourne, Vic., Australia
Abstract :
A novel asymmetric-raised-cosine frequency shift keying (ARC-FSK) digital modulation with superior anti-multipath characteristics is proposed for high speed indoor PCS and wireless LAN applications. The new modulation is significantly more robust than GMSK in a multipath radio propagation environment. Our theoretical analysis and computer simulation studies show that the proposed ARC-FSK has the potential to increase the speed limit of conventional PCS and wireless LAN systems (currently using GMSK/GFSK) by more than than two times without a channel equalizer. The penalty is a mere 4% reduction in spectral efficiency. Another advantage of ARC-FSK is its backward compatibility with conventional GMSK/GFSK. We conclude that the ARC-FSK modulation is ideal for high speed TDMA/PCS and wireless LAN systems where high power/spectral efficiency and simple receiver structure are desired
Keywords :
digital radio; frequency shift keying; indoor radio; land mobile radio; multipath channels; personal communication networks; radiowave propagation; time division multiple access; wireless LAN; ARC-FSK; ARC-FSK modulation; GMSK/GFSK; antimultipath characteristics; asymmetric-raised-cosine frequency shift keying; backward compatibility; computer simulation; digital communication systems; digital modulation; high speed TDMA/PCS; high speed indoor PCS; mobile communications systems; multipath radio propagation environment; personal communications systems; power efficiency; receiver structure; spectral efficiency; speed limit; wireless LAN; wireless LAN systems; Application software; Computer simulation; Digital modulation; Equalizers; Frequency shift keying; Personal communication networks; Radio propagation; Robustness; Time division multiple access; Wireless LAN;
Conference_Titel :
Universal Personal Communications. 1995. Record., 1995 Fourth IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-2955-4
DOI :
10.1109/ICUPC.1995.496871
