| Title | Reliability and longer range for low power transmitters with on demand network MIMO |
| Authors | Weitnauer, Mary Ann Lin, Qiongjie Zhang, Huanyu Tian, Hongxian Nowlan, Sean Nyengele, Gedeon Chakkedath, Sajith Mohan Slratigos, Jim |
| Affiliation | School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, United States School of Electronics Engineering and Computer Science, Peking University (PKU), Beijing, China School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China Cognosos Inc., 75 5 Street NW, Atlanta, GA, 30308, United States |
| Issue Date | 2016 |
| Publisher | 2016 IEEE International Conference on RFID, RFID 2016 |
| Citation | 2016 IEEE International Conference on RFID, RFID 2016.2016. |
| Abstract | We propose a new approach for the uplink in a one-hop multi-gateway wireless packet network. In principle, the proposed technique applies to many types of low-power transmitters, including wireless sensors and RFID tags, both active and passive. Only when requested, each gateway node (or listener) forwards the compressed physical layer samples of packets to a server, which decodes the packets using multiple-input-multiple-output (MIMO) techniques; this functionality could be described as selective application of multi-user MIMO with a distributed receiver array. Packets that have adequate SINR at a gateway are decoded, i.e., captured, and their waveforms are reconstructed and subtracted from stored samples; this subtraction is interference cancellation (IC). After IC, weaker packets may be revealed and decoded by the gateway, enabling successive IC (SIC). The diversity gain of multi-gateway reception provides higher SNR to packets that are not decodable at any gateway, thereby extending range. The spatial multiplexing capability of MIMO enables packets that have too much interference at the gateways to be decoded at the server, thereby supporting energy saving transmit-only strategies. The selectivity or on demand feature lowers the fronthaul cost of sending samples to the server. This paper presents preliminary simulation and experimental performance results and overviews the various design concerns of On Demand Network MIMO, such as synchronization, spreading, SIC performance, gateway deployment, and medium access control (MAC). ? 2016 IEEE. |
| URI | http://hdl.handle.net/20.500.11897/449460 |
| ISSN | 9781467388078 |
| DOI | 10.1109/RFID.2016.7488000 |
| Indexed | EI |
| Appears in Collections: | 信息科学技术学院 |
