Paper Info
Title
Ftn-Based Mimo Transmission As A Noma Scheme For Efficient Coexistence Of Broadband And Sporadic Traffics
Abstract
In this paper, the concept of faster-than Nyquist (FTN) transmission is used as a non-orthogonal multiple access scheme to interlace sporadic traffic into a broadband service traffic so that radio resources can be efficiently shared by both traffics, beyond the Nyquist rate. We have extended the concept of a 2-dimensional faster-than Nyquist (2D-FTN) transmission where some time-frequency resources are offloaded (turned off) from a broadband transmission to a time-frequency-space 3D-FTN system. A broadband user transmitting in multiple-input multiple-output (MIMO) mode turns-off some set of transmit antennas for few subcarriers, which will be allowed for sporadic traffic. Furthermore, we show that turning-off subcarriers with the ill-conditioned channel matrices reduces the performance penalty of FTN transmission. For example, we have have shown that turning-off 12.5% of subcarriers from broadband transmission of 256 OFDM-symbol block costs only 0.3dB transmit power per bit while allowing up to 64 single-carrier grant-free transmission over the offloaded subcarriers.
Year
Venue
Keywords
2018
2018 IEEE 87TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING)
Faster-than-Nyquist, Machine-type Communication, Coexistence, MIMO, OFDM, NOMA
Field
DocType
Citations 
Interlacing,Transmitter power output,Computer science,Computer network,MIMO,Communication channel,Broadband,Electronic engineering,Bandwidth (signal processing),Nyquist rate,Orthogonal frequency-division multiplexing
Conference
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Ameha T. Abebe1193.67
Chung Gu Kang230742.25