Title :
Performance of a trellis coded SSMA system
Author :
Choo, T.P. ; Li, K.H. ; Dubey, V.K.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
The paper looks into the performance of a trellis coded spread spectrum multiple access (SSMA) system. Performance in an additive white Gaussian noise channel is investigated with K users transmitting simultaneously. 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 four and eight state, rate 1/2 trellis codes in conjunction with 4-PSK constellations. The paper also addresses some problems encountered and simplifications in the use of the method of moments
Keywords :
multi-access systems; spread spectrum communication; telecommunication channels; trellis codes; white noise; 4-PSK constellations; additive white Gaussian noise channel; degradation; eight state rate 1/2 trellis code; four state rate 1/2 trellis code; interuser interference; method of moments; performance; spread spectrum multiple access; trellis coded SSMA system; AWGN channels; Additive noise; Additive white noise; Bandwidth; Correlators; Gaussian noise; Interference; Moment methods; Spread spectrum communication; System performance;
Conference_Titel :
Singapore ICCS/ISITA '92. 'Communications on the Move'
Print_ISBN :
0-7803-0803-4
DOI :
10.1109/ICCS.1992.255001
