Performance comparison of multidimensional trellis coded modulation and convolutionally coded MC-DS-CDMA in a Rayleigh fading channel

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 (CC) perform better than multi-D TCM, TCM systems are more bandwidth efficient for the same signal-to-noise ratio (SNR) and number of carriers. Copyright © 2002 IEEE.