Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 홍송남 | - |
dc.date.accessioned | 2021-03-11T02:15:21Z | - |
dc.date.available | 2021-03-11T02:15:21Z | - |
dc.date.issued | 2019-01 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON INFORMATION THEORY, v. 65, no. 1, page. 354-367 | en_US |
dc.identifier.issn | 0018-9448 | - |
dc.identifier.issn | 1557-9654 | - |
dc.identifier.uri | https://ieeexplore.ieee.org/document/8468176 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/160531 | - |
dc.description.abstract | We study a multihop "virtual" full-duplex relay channel as a special case of a general multiple multicast relay network. For such a channel, quantize-map-and-forward (QMF) [and its generalization of noisy network coding (NNC) and short message NNC] achieves the cut-set upper bound within a constant additive gap, where the gap grows linearly with the number of relay stages K. This gap, however, may not be acceptable for practical communication systems with multihop transmissions (e.g., a wireless backhaul operating at high frequencies). Recently, we improved the capacity scaling by using a forward sliding-window (SW) decoding and by optimizing the quantization level at each relay, obtaining the gap that grows logarithmically as log K. Furthermore, the improved scheme has lower decoding complexity and delay than the general QMF and NNC approaches. In this paper, we further improve the performance by presenting a mixed scheme in which each relay can perform either decode-and-forward (DF) or the improved QMF (with SW decoding) and can choose to perform rate-splitting to enable partial interference cancellation. In general, the optimization of the relay DF/QMF configuration is combinatorial. Nevertheless, we provide that a simple greedy algorithm finds an optimal configuration under some practically reasonable assumptions. We derive an achievable rate that is easily computable and show that the proposed mixed scheme outperforms the QMF-only schemes. We demonstrate that the performance improvement increases with K, which indicates that the mixed scheme is indeed beneficial for multihop transmission. | en_US |
dc.description.sponsorship | S.-N. Hong was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea Government (MSIP) under Grant NRF-2017R1C1B1001909. | en_US |
dc.language.iso | en | en_US |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | en_US |
dc.subject | Multihop relay networks | en_US |
dc.subject | half-duplex relays | en_US |
dc.subject | quantize-map-and-forward | en_US |
dc.subject | noisy network coding | en_US |
dc.subject | wireless backhaul | en_US |
dc.title | On the Achievable Rates of Virtual Full-Duplex Relay Channel | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1109/TIT.2018.2870591 | - |
dc.relation.journal | IEEE TRANSACTIONS ON INFORMATION THEORY | - |
dc.contributor.googleauthor | Hong, Song-Nam | - |
dc.contributor.googleauthor | Hui, Dennis | - |
dc.contributor.googleauthor | Maric, Ivana | - |
dc.contributor.googleauthor | Caire, Giuseppe | - |
dc.relation.code | 2019003498 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF ELECTRONIC ENGINEERING | - |
dc.identifier.pid | snhong | - |
dc.identifier.orcid | https://orcid.org/0000-0003-3527-4717 | - |
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