Line-of-Sight MIMO for High Capacity Millimeter Wave Backhaul in FDD Systems

Xue, Ye; Zheng, Xuanyu; Lau, Vincent K. N.

doi:10.23919/jcin.2020.9130434

Cited by 11 publications

(6 citation statements)

References 30 publications

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“…In [62], the authors focused on MIMO for backhaul links. The expected spectral efficiency for wireless MIMO backhaul links is much higher than in MIMO access links.…”

Section: ) Mimo Beamforming and Ue Associationmentioning

confidence: 99%

Paving the Way Toward Mobile IAB: Problems, Solutions and Challenges

Monteiro

Lima

Moreira

et al. 2022

IEEE Open J. Commun. Soc.

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Deploying access and backhaul as wireless links, a.k.a. integrated access and backhaul (IAB), is envisioned as a viable approach to enable flexible and dense networks. Even further, mobile IAB (mIAB) is a candidate solution to enhance the connectivity of multiple user equipment (UE) moving together. In this context, different of other works from the literature, the present work overviews the basis for the deployment of mIAB by presenting: 1) the current status of IAB standardization in the fifth generation (5G) new radio (NR); 2) a new taxonomy for state-of-the-art works regarding fixed IAB and mIAB; 3) an extensive performance analysis of mIAB based on simulation results; and 4) open challenges and potential future prospects of mIAB. Specifically, the proposed taxonomy classifies IAB works according to different perspectives and categorizes mIAB works according to the type of mobile node. For each type of mobile node, the main studied topics are presented. Regarding the performance evaluation, we consider an urban macro scenario where mIAB nodes are deployed in buses in order to improve the passengers' connection. The results show that, compared to other network architectures, the deployment of mIAB nodes remarkably improves the passengers' throughput and latency in both downlink and uplink.

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“…In [62], the authors focused on MIMO for backhaul links. The expected spectral efficiency for wireless MIMO backhaul links is much higher than in MIMO access links.…”

Section: ) Mimo Beamforming and Ue Associationmentioning

confidence: 99%

Paving the Way Toward Mobile IAB: Problems, Solutions and Challenges

Monteiro

Lima

Moreira

et al. 2022

IEEE Open J. Commun. Soc.

View full text Add to dashboard Cite

show abstract

“…For the highly non-convex and multivariate optimizaiton problem in (5), it is very difficult to get the optimal solution. Our main idea is that instead of directly solving the problem, we formulate a WMMSE problem and show that it is equivalent to the original SEM problem.…”

Section: Hbf Optimization With the Partially-connected Architecturementioning

confidence: 99%

“…Then, the following theorem will set up the equivalence between the WMMSE problem and the SEM problem in (5).…”

Section: A the Wmmse Problemmentioning

confidence: 99%

“…Theorem 1 The problem in ( 7) is equivalent to the problem in (5) in the sense that the global optimal solution of F RF , F D,k , and W RF for the two problems are identical.…”

Section: A the Wmmse Problemmentioning

confidence: 99%

“…The strong desire for supporting ultra-high-speed data transmission has promoted the investigation and application of millimeter wave (mmWave) communications due to its advantage of providing huge spectrum resources [1]- [5]. To overcome the severe path loss and penetration loss of the mmWave propagation channel while considering the stringent constraint of the mmWave hardware cost and power consumption, the combination of massive multiple-input and multipleoutput (MIMO) and hybrid beamforming (HBF) has recently become an attractive technology [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

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