Transmission technique based on feedback and side information exploitation using Golay code

摘要

In this paper novel technique of feedback supported coding for nodes with correlated information is presented. The technique is applicable in practical scenarios in which the receiver has more energy than the transmitter. Thanks to it the receiver can transmit so called supportive messages. The string of supportive symbols is received by a supported sender with limited energy resources. It is also supposed that the receiver has side information which is correlated with the transmitted one. The sender, when it needs to transmit stored information towards receiver sends a short message (in extreme case only one pulse) in agreed time point after it discovers identical fragment in supportive string of messages from receiver. The new technique is explained using [23, 12, 7] Golay code. Results obtained analytically show superiority of this new approach if compared with related known method. Possible application area is in Wireless Passive Sensor Networks for example ones which connect implanted biomedical devices with the goal to increase their lifetime.