TY - GEN
T1 - Adaptive Resource Allocation Based on Factor Graphs in Non-Orthogonal Multiple Access
AU - Yamagami, Taichi
AU - Denno, Satoshi
AU - Hou, Yafei
N1 - Funding Information:
ACKNOWLEDGEMENT The work has been supported by the telecommunication advancement foundation, and JSPS KAKENHI JP21K04061．
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, we propose a non-orthogonal multiple access with adaptive resource allocation based on factor graphs. The proposed non-orthogonal multiple access assigns multiple frequency resources for each device to send their packet. Even if the number of the devices is more than the frequency resources, the proposed non-orthogonal access allows all the devices to transmit their packets simultaneously for high capacity massive machine type communication (mMTC). Furthermore, this paper proposes adaptive resource allocation based on factor graphs that adaptively allocates the frequency resources to the devices for improvement of the transmission performances. This paper proposes two allocation criteria for the proposed adaptive allocation. This paper shows that the proposed non-orthogonal multiple access achieves superior transmission performance in 4path Rayleigh fading channel with overloading ratio of 1.5, even without the adaptive resource allocation. The adaptive resource allocation enables the proposed non-orthogonal access to attain a gain of about 5 dB at the BER of 10-4.
AB - In this paper, we propose a non-orthogonal multiple access with adaptive resource allocation based on factor graphs. The proposed non-orthogonal multiple access assigns multiple frequency resources for each device to send their packet. Even if the number of the devices is more than the frequency resources, the proposed non-orthogonal access allows all the devices to transmit their packets simultaneously for high capacity massive machine type communication (mMTC). Furthermore, this paper proposes adaptive resource allocation based on factor graphs that adaptively allocates the frequency resources to the devices for improvement of the transmission performances. This paper proposes two allocation criteria for the proposed adaptive allocation. This paper shows that the proposed non-orthogonal multiple access achieves superior transmission performance in 4path Rayleigh fading channel with overloading ratio of 1.5, even without the adaptive resource allocation. The adaptive resource allocation enables the proposed non-orthogonal access to attain a gain of about 5 dB at the BER of 10-4.
KW - Factor Graphs
KW - Log-Likelihood Ratio
KW - Message Passing Algorithm
KW - Non-Orthogonal Multiple Access
UR - http://www.scopus.com/inward/record.url?scp=85126182418&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85126182418&partnerID=8YFLogxK
U2 - 10.1109/WPMC52694.2021.9700454
DO - 10.1109/WPMC52694.2021.9700454
M3 - Conference contribution
AN - SCOPUS:85126182418
T3 - International Symposium on Wireless Personal Multimedia Communications, WPMC
BT - WPMC 2021 - 24th International Symposium on Wireless Personal Multimedia Communications
PB - IEEE Computer Society
T2 - 24th International Symposium on Wireless Personal Multimedia Communications, WPMC 2021
Y2 - 14 December 2021 through 16 December 2021
ER -