TY - JFULL AU - Chang-Bin Ha and Yong-Jun Kim and Dong-Hyun Ha and Hyoung-Kyu Song PY - 2015/9/ TI - Improved Wi-Fi Backscatter System for Multi-to-Multi Communication T2 - International Journal of Electronics and Communication Engineering SP - 784 EP - 789 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10001961 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 104, 2015 N2 - The conventional Wi-Fi backscatter system can only process one-to-one communication between the Wi-Fi reader and the Wi-Fi tag. For improvement of throughput of the conventional system, this paper proposes the multi-to-multi communication system. In the proposed system, the interference by the multi-to-multi communication is effectively cancelled by the orthogonal multiple access based on the identification code of the tag. Although the overhead is generated by the procedure for the multi-to-multi communication, because the procedure is processed by the Wi-Fi protocol, the overhead is insignificant for the entire communication procedure. From the numerical results, it is confirmed that the proposed system has nearly proportional increased throughput in according to the number of the tag that simultaneously participates in communication. ER -