Title :
On the performance of a novel synchronous trellis-coded CDMA system for wireless communications
Author :
Choe, S. ; Georghiades, C.N.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
We introduce a novel modulation signal set defined over a signal space that consists of L Euclidean signal planes, and the synchronous trellis-coded CDMA system based on it. Whereas conventional schemes utilize a limited number of orthogonal sequences due to delay and power control error, this scheme fully and efficiently utilizes the N orthogonal signature sequences (i.e. the processing gain N) such that power and/or bandwidth efficiency is improved. The proposed scheme could be highly adaptable to the dynamic channel conditions, because for a single data rate we can choose the best signal constellation from a multi-planar signal space
Keywords :
code division multiple access; delays; modulation; multiuser channels; power control; radiocommunication; telecommunication control; trellis codes; Euclidean signal planes; bandwidth efficiency; data rate; delay error; dynamic channel conditions; modulation signal set; multi-planar signal space; orthogonal signature sequences; power control error; power efficiency; processing gain; signal constellation; signal space; synchronous trellis-coded CDMA system; system performance; wireless communications; Bandwidth; Bit error rate; Constellation diagram; Convolutional codes; Delay; Error correction; Multiaccess communication; Power control; Space stations; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891259
