A convolutionally coded orthogonal multicarrier DS/CDMA system in time limited asynchronous channels
Yun Hee Kim, Ju Mi Lee, Iickho Song, Hyoung Sik Yun, Suk Chan Kim · 2003
In this paper, we propose to transmit convolutionally coded DS waveforms over orthogonally overlapped subchannels in time limited asynchronous channels. The bit error rate of the decoder output is investigated along with simulation results under several conditions on the channel state information (CSI). It is shown that the proposed system, the convolutionally coded orthogonal multicarrier DS/CDMA system, significantly outperforms the system using frequency diversity combining. It is also shown that the proposed system has better performance than the convolutionally coded almost non-overlapped multicarrier DS/CDMA system under the condition that the information rate and total available bandwidth are the same for both systems.