Title :
High level trellis-coded modulation with slow frequency hopping for land mobile communications
Author :
Tsie, Kai-Yiu ; Aghvami, A. Hamid
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll., London, UK
fDate :
2/1/1994 12:00:00 AM
Abstract :
The use of high level modulation systems such as trellis-coded 8-PSK and trellis-coded 16-QAM, with slow frequency hopping, pilot symbol aided and small-sized interleaving techniques is proposed for land mobile communications. The bit error rate (BER) performance of those systems in the presence of additive white Gaussian noise (AWGN), cochannel interference (CCI), and slow Rayleigh fading are evaluated by computer simulation. Space diversity is applied to enhance the system performance. The authors show that by choosing optimum interleaving size and number of frequency hopped (FH) channels, the proposed systems give considerable performance improvement and much less delay, especially in a slow fading environment
Keywords :
amplitude modulation; diversity reception; error statistics; fading; frequency agility; mobile radio systems; phase shift keying; radiofrequency interference; random noise; spread spectrum communication; trellis codes; white noise; 16-QAM; 8-PSK; AWGN; BER; CCI; additive white Gaussian noise; bit error rate performance; cochannel interference; delay; interleaving; land mobile communications; pilot symbol; slow Rayleigh fading; slow fading environment; slow frequency hopping; space diversity; system performance; trellis-coded modulation; AWGN; Additive white noise; Bit error rate; Frequency modulation; Interchannel interference; Interleaved codes; Mobile communication; Radiofrequency interference; Rayleigh channels; Spread spectrum communication;
Journal_Title :
Vehicular Technology, IEEE Transactions on
