Title :
A comparison of trellis coded SSMA systems over fading channels using pragmatic and Ungerboeck encoder structures
Author :
Choo, T.P. ; Li, K.H. ; Dubey, V.K.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
This paper compares the performance of a trellis coded spread spectrum multiple access system using two forms of encoder structures. Performance in additive white Gaussian noise and Rician fading channels is investigated. Degradation in the system performance due to interuser interference is modelled using the method of moments, since normal bounding techniques cannot be used. Results are given for eight state, rate 2/3 trellis codes in conjunction with 8-PSK constellations
Keywords :
Gaussian noise; Rician channels; fading; interference (signal); method of moments; multi-access systems; phase shift keying; spread spectrum communication; trellis codes; white noise; Rician fading channels; Ungerboeck encoder structure; additive white Gaussian noise; interuser interference; method of moments; pragmatic encoder structure; spread spectrum multiple access system; system performance; trellis coded SSMA systems; AWGN; Additive white noise; Convolutional codes; Digital communication; Equations; Fading; Interference; Spread spectrum communication; System performance; Transfer functions;
Conference_Titel :
Networks, 1993. International Conference on Information Engineering '93. 'Communications and Networks for the Year 2000', Proceedings of IEEE Singapore International Conference on
Print_ISBN :
0-7803-1445-X
DOI :
10.1109/SICON.1993.515680
