Combined decoding with phase inversion for ARQ systems

In this paper, we propose an algorithm with phase inversion retransmission for error control. The proposed algorithm can effectively suppress the noise and improve the signal strength. With enhanced input signal-to-noise ratio (SNR) for the demodulator, the error rate can be reduced Moreover, the algorithm is further equipped with combined decoding. Both the theoretical analysis and the simulation results show the effectiveness of the proposed algorithm, which can reduce the error rate by increasing the retransmission times. It can be applied to the communication systems having a high requirement for data transmission reliability but suffering from hostile communication channels, such as the low-voltage power line communication systems.