Network-Coded Multiple Access

摘要: This paper proposes and experimentally demonstrates a first wireless local area network (WLAN) system that jointly exploits physical-layer coding (PNC) multiuser decoding (MUD) to boost throughput. We refer this multiple access mode as network-coded (NCMA). Prior studies on PNC mostly focused relay networks. NCMA is the realized scheme establishes usefulness of in non-relay setting . allows nodes transmit simultaneously point (AP) In setting, when two A B AP simultaneously, aims obtain both packet rather than their packet. An interesting question whether coding, specifically which extracts $A \oplus B$ , can still be useful such setting. provide an affirmative answer with novel two-layer approach amenable real-time implementation. Our USRP prototype indicates throughput by 100 percent medium-high SNR regime ( $\ge$ 10 dB). believe further enhancement possible allowing more users together.