DPC VS TDMA in SISO Broadcast Channels: A Practical Comparison

In this paper we want to make a fair comparison between TDMA and DPC in terms of the BER region and maximum number of satisfied users. For this purpose we choose the coding/decoding schemes as follows : DPC is based on a trellis coded quantization implementation and successive coding while TDMA uses trellis coded modulation. Simulation results are provided both for the perfect and imperfect channel state information cases. In the perfect CSI case all the tested scenarios show that TDMA generally outperfoms DPC. In the imperfect CSI case DPC is shown to be less sensitive than TDMA to channel estimation errors.