Significance of retransmission used in subsequent decoding

摘要

Systems and techniques relating to wireless communications are described. A described technique includes receiving, at a wireless communication device, signals representing wireless data transmissions that are based on a message, the received signals including one or more previous signals and a current signal, wherein the current signal was transmitted in response to the one or more previous signals failing to successfully resolve the message; combining the received signals based on unequal weights to produce a combined signal, the weights include a first weight value assigned to the one or more previous signals and a second, greater weight value assigned to the current signal, the second weight value being based on a noise variance, the first weight value being based on a modified version of the noise variance, the modified version reflecting one or more decoding failures; and decoding the combined signal to resolve the message.