Channel Controlled ARQ Protocol Design for OCDM-Based Data Transmissions

Channel controlled automatic retransmission request (CC-ARQ) has shown potential in reducing complexity and bit error rate (BER) in wireless links. In this paper, we design an ARQ protocol transmission scheme for OCDM-based data transmissions. By employing retransmission threshold design based on orthogonality deficiency (od) of the channel matrix, the data transmissions receiver can enjoy the enough diversity offered by the wireless OCDM links with linear equalizers, which is essential for low-complexity communication environments, e.g., sensor cyber systems.