Poster: Push the Limit of Cross Technology Coexistence

Abstract

Recent studies show that cross technology interference is becoming a major problem in today's wireless networks. Existing approaches for dealing with such cross technology interferences require either at least one preamble is clean or at least one signal is decoded correctly. However, uncooperative cross technology users and unpredictable interference call for innovative cross technology coexistence. This paper proposes a novel design that enables node resolve cross technology interference. By exploiting frequency diversity, our approach can recover the CSI (channel state information) of both signals even when they are corrupted by each other. Moreover, with iterative interference cancellation, our approach can recover the both corrupted signals without decoding one of the signal correctly. We implement the proposed scheme on USRP/GUN radio platform. Experimental results show that our method can recover the CSI when there is no clean preamble of either and the iterative interference cancellation can effectively decode both signals.