Title :
The performance of coded hopped multilevel DPSK on a fading mobile satellite channel with interference
Author :
Wittke, P. ; Lam, Y.M. ; Elliott, P.J.
Author_Institution :
Dept. of Electr. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
The results of the error performance of trellis and convolutionally coded slow frequency-hopped spread spectrum systems are presented, as might be encountered in mobile or cellular applications. The particular hopped modulation is π/M-shifted, M-ary differential phase shift keying (π/M-DMPSK) with differential detection and a maximum metric decoding, with M=2, 4, and 8. The channel is subject to flat Rician fading and the faded component may have a Doppler frequency shift due to vehicle motion. A union Chernoff bound on error performance is evaluated for the usual additive white Gaussian noise channel, and in addition with multiple access interference due to other users. A system simulation has been carried out in which the effects of implementation parameters in the decoder have been examined
Keywords :
Doppler shift; Gaussian channels; Rician channels; coding errors; convolutional codes; decoding; differential phase shift keying; error statistics; fading; frequency hop communication; land mobile radio; mobile satellite communication; multi-access systems; pseudonoise codes; radiofrequency interference; spread spectrum communication; trellis codes; π/M-DMPSK; π/M-shifted modulation; Doppler frequency shift; M-ary differential phase shift keying; additive white Gaussian noise channel; cellular applications; coded hopped multilevel DPSK; convolutional code; decoder; differential detection; error performance; fading mobile satellite channel; flat Rician fading channel; maximum metric decoding; mobile applications; multiple access interference; slow frequency-hopped spread spectrum; system simulation; trellis code; union Chernoff bound; vehicle motion; Convolutional codes; Decoding; Differential phase shift keying; Differential quadrature phase shift keying; Fading; Frequency; Phase detection; Phase modulation; Rician channels; Spread spectrum communication;
Conference_Titel :
Singapore ICCS '94. Conference Proceedings.
Print_ISBN :
0-7803-2046-8
DOI :
10.1109/ICCS.1994.474185
