Title :
Performance comparison of multidimensional trellis coded modulation and convolutionally coded MC-DS-CDMA in a Rayleigh fading channel
Author :
Akol, RN ; Takawira, F.
Author_Institution :
Natal Univ., Durban, South Africa
Abstract :
In this paper we investigate the performance of multidimensional (multi-D) trellis coded modulation (TCM) and low rate convolutionally coded multicarrier (MC) code division multiple access (CDMA) schemes In a Rayleigh fading channel. In both systems, the output of the encoder modulates multiple band-limited DS-CDMA signals, which are then transmitted simultaneously at different carrier frequencies. Although low rate convolutional codes perform better than multi-D TCM, TCM systems are more bandwidth efficient for the same signal-to-noise ratio (SNR) and number of carriers.
Keywords :
3G mobile communication; Rayleigh channels; channel coding; code division multiple access; convolutional codes; spread spectrum communication; trellis coded modulation; 3G mobile communication; BER performance; MC-DS-CDMA; Rayleigh fading channel; SNR; TCM; channel coding; low rate convolutional codes; multicarrier code division multiple access; multidimensional trellis coded modulation; signal-to-noise ratio; Africa; Bandwidth; Convolution; Convolutional codes; Fading; Modulation coding; Multiaccess communication; Multicarrier code division multiple access; Multidimensional systems; Transmitters;
Conference_Titel :
Africon Conference in Africa, 2002. IEEE AFRICON. 6th
Print_ISBN :
0-7803-7570-X
DOI :
10.1109/AFRCON.2002.1146833
