Code-division multiple-access multiuser demodulator by using quantum fluctuations

Otsubo, Yosuke; Inoue, Jun-ichi; Nagata, Kenji et al.

Physical Review E, 2014, 90(1), 012126

Permalink : https://hdl.handle.net/2115/57442

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アクセス権
open access
URI
https://hdl.handle.net/2115/57442
タイトル
Code-division multiple-access multiuser demodulator by using quantum fluctuations
著者
Otsubo, Yosuke ; Inoue, Jun-ichi ; Nagata, Kenji ; Okada, Masato
著者名
Otsubo, Yosuke
e-Rad_Researcher
30311658
著者名
Inoue, Jun-ichi
著者名
Nagata, Kenji
著者名
Okada, Masato
言語
英語
発行日
2014-07-24
出版者
American Physical Society
収録物名
Physical Review E
巻(号)
90(1)
ページ
012126
抄録
We examine the average-case performance of a code-division multiple-access (CDMA) multiuser demodulator in which quantum fluctuations are utilized to demodulate the original message within the context of Bayesian inference. The quantum fluctuations are built into the system as a transverse field in the infinite-range Ising spin glass model. We evaluate the performance measurements by using statistical mechanics. We confirm that the CDMA multiuser modulator using quantum fluctuations achieve roughly the same performance as the conventional CDMA multiuser modulator through thermal fluctuations on average. We also find that the relationship between the quality of the original information retrieval and the amplitude of the transverse field is somehow a "universal feature" in typical probabilistic information processing, viz., in image restoration, error-correcting codes, and CDMA multiuser demodulation.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
©2014 American Physical Society
PISSN
1539-3755
関連情報
PMID
25122270
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1103/PhysRevE.90.012126