chainABF: Sending Multiple-Bit Messages and Improving the Reliability with Multiple Rounds of Analog Bloom Filter

Analog Bloom Filter (ABF) is a recent technique, with which network nodes can send one-bit information to the base station simultaneously within a very short period of time, such as one OFDM symbol. In this paper, a novel method called chainABF is proposed, which, by transmitting multiple ABF symbols, allows the nodes to send multiple bits to the base station reliably with error ratio around 10
^-4
under typical conditions.In addition, the False Positive and False Negative error ratios are reduced by an order of magnitude when compared to the raw error ratios. The gain of chainABF is due to an intelligent coding scheme, which are the key contributions of this paper. chainABF is a wrapper over ABF, making it applicable to any network employing any kind of ABF on various physical layer signals.