internet of moving things using full duplex mesh networks
TRANSCRIPT
Internet of Moving Things using Full Duplex Mesh Networks
SriramVishwanathWirelessNetworkingand
Communica8onsGroup(WNCG)ECE,UTAus8n
Self Interference in Full Duplex
Tx
Rx
ScaBers
Received Signal
Transmit Signal
Reflected Signal DirectPath
x -> received signal z - > transmit signal w-> noise signal
True Full Duplex Radios
• Possiblethroughself-interferenceisola8onandcancella8on– 110+dBofisola8on/cancella8onnecessary
• Enableslisten-while-talking– Muchmoreefficientmobilemeshing
• Cancella8onofselfinterference– Usingdiscretecomponents
– 110dB• Singleantenna• WorkswellwithMIMO
RF Cancellation
Digital Non Linear DF Filter
60-70 dB
50 dB
DSP
Digital Cancell
ation
BB TX
BB RX
DAC
Analog Filters AD
C
RF –Cancellation
Our prototype: 2.4G, 20 MHz, 100 Mbps
Advantages of Full Duplex
Internet of Moving Things (IoMT)
• Fullduplex+mobilemeshing– Marriagemadeinheaven– Lowoverhead,highthroughputmeshing
• Connectpeopleanddevicesastheymove– Astheymove– Discovery,rou8ng,handoffefficient
Testing over actual paths Structured&RandomMovement
Scalable Testing – Great Results