Sparse Joint Transmission for Cloud Radio Access Networks With Limited Fronthaul Capacity
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Deokhwan | - |
dc.contributor.author | Park, Jeonghun | - |
dc.contributor.author | Park, Seok-Hwan | - |
dc.contributor.author | Lee, Namyoon | - |
dc.date.accessioned | 2022-06-09T17:40:34Z | - |
dc.date.available | 2022-06-09T17:40:34Z | - |
dc.date.created | 2022-06-09 | - |
dc.date.issued | 2022-05 | - |
dc.identifier.issn | 1536-1276 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/141756 | - |
dc.description.abstract | A cloud radio access network (C-RAN) is a promising cellular network, wherein densely deployed multi-antenna remote-radio-heads (RRHs) jointly serve many users using the same time-frequency resource. By extremely high signaling overheads for both channel state information (CSI) acquisition and data sharing at a baseband unit (BBU), finding a joint transmission strategy with a significantly reduced signaling overhead is indispensable to achieve the cooperation gain in practical C-RANs. In this paper, we present a novel sparse joint transmission (sparse-JT) method for C-RANs, where the number of transmit antennas per unit area is much larger than the active downlink user density. Considering the effects of noisy-and-incomplete CSI and the quantization errors in data sharing by a finite-rate fronthaul capacity, the key innovation of sparse-JT is to find a joint solution for cooperative RRH clusters, beamforming vectors, and power allocation to maximize a lower bound of the sum-spectral efficiency under the sparsity constraint of active RRHs. To find such a solution, we present a computationally efficient algorithm that guarantees to find a local-optimal solution for a relaxed sum-spectral efficiency maximization problem. By system-level simulations, we exhibit that sparse-JT provides significant gains in ergodic spectral efficiencies compared to existing joint transmissions. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | CHANNEL ESTIMATION | - |
dc.subject | POWER ALLOCATION | - |
dc.subject | MIMO | - |
dc.subject | DOWNLINK | - |
dc.subject | DESIGN | - |
dc.subject | COMPRESSION | - |
dc.subject | PERFECT | - |
dc.subject | CSIT | - |
dc.title | Sparse Joint Transmission for Cloud Radio Access Networks With Limited Fronthaul Capacity | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Namyoon | - |
dc.identifier.doi | 10.1109/TWC.2021.3121398 | - |
dc.identifier.scopusid | 2-s2.0-85118570029 | - |
dc.identifier.wosid | 000793826400041 | - |
dc.identifier.bibliographicCitation | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.21, no.5, pp.3395 - 3408 | - |
dc.relation.isPartOf | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | - |
dc.citation.title | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | - |
dc.citation.volume | 21 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 3395 | - |
dc.citation.endPage | 3408 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Telecommunications | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Telecommunications | - |
dc.subject.keywordPlus | CHANNEL ESTIMATION | - |
dc.subject.keywordPlus | POWER ALLOCATION | - |
dc.subject.keywordPlus | MIMO | - |
dc.subject.keywordPlus | DOWNLINK | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | COMPRESSION | - |
dc.subject.keywordPlus | PERFECT | - |
dc.subject.keywordPlus | CSIT | - |
dc.subject.keywordAuthor | Downlink | - |
dc.subject.keywordAuthor | Precoding | - |
dc.subject.keywordAuthor | Optimization | - |
dc.subject.keywordAuthor | Array signal processing | - |
dc.subject.keywordAuthor | Noise measurement | - |
dc.subject.keywordAuthor | Channel estimation | - |
dc.subject.keywordAuthor | Quantization (signal) | - |
dc.subject.keywordAuthor | Cloud radio access network (C-RAN) | - |
dc.subject.keywordAuthor | cooperative transmission | - |
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