TY - JOUR
T1 - Advantages of NOMA for Multi-User BackCom Networks
AU - Ding, Zhiguo
AU - Poor, H. Vincent
N1 - Funding Information:
The work of Zhiguo Ding was supported by the UK EPSRC under Grant number EP/P009719/2 and by H2020 H2020-MSCA-RISE-2020 under grant number 101006411. The work of H. Vincent Poor was supported by the U.S. National Science Foundation under Grant CCF-1908308.
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2021/10/1
Y1 - 2021/10/1
N2 - Ambient backscatter communication (BackCom) is faced with the challenge that a single BackCom device can occupy multiple orthogonal resource blocks unintentionally. As a result, in order to avoid co-channel interference, a conventional approach is to serve multiple BackCom devices in different time slots, which reduces both spectral efficiency and connectivity. This letter demonstrates that the use of non-orthogonal multiple access (NOMA) can efficiently improve the system throughput and support massive connectivity in ambient BackCom networks. In particular, two transceiver design approaches are developed in the letter to realize different tradeoffs between system performance and complexity.
AB - Ambient backscatter communication (BackCom) is faced with the challenge that a single BackCom device can occupy multiple orthogonal resource blocks unintentionally. As a result, in order to avoid co-channel interference, a conventional approach is to serve multiple BackCom devices in different time slots, which reduces both spectral efficiency and connectivity. This letter demonstrates that the use of non-orthogonal multiple access (NOMA) can efficiently improve the system throughput and support massive connectivity in ambient BackCom networks. In particular, two transceiver design approaches are developed in the letter to realize different tradeoffs between system performance and complexity.
KW - backscatter communications
KW - Non-orthogonal multiple access
KW - orthogonal frequency-division multiple access
KW - space division multiple access
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U2 - 10.1109/LCOMM.2021.3100337
DO - 10.1109/LCOMM.2021.3100337
M3 - Article
AN - SCOPUS:85111555290
SN - 1089-7798
VL - 25
SP - 3408
EP - 3412
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 10
ER -