Design and Analysis of Multi-User Association and Beam Training Schemes for Millimeter Wave Based WLANs

Shen, Li-Hsiang; Chen, Yi-Ching; Feng, Kai-Ten

doi:10.1109/tvt.2020.2992724

Cited by 10 publications

(14 citation statements)

References 22 publications

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“…Due to the partial connection of LDPC-based HBF architecture, each controller is capable of managing a small number of nodes which can achieve a much lower complexity by employing the numerical method for binary variables. Therefore, each RF/antenna controller can obtain their respective optimal solutions of RF selection (11) and antenna selection (12).…”

Section: A Mars-s Of Sequential Message Passingmentioning

confidence: 99%

“…Afterwards, the antenna controllers adopt a similar process as that of RF chain controller to update, optimize, and pass message. The update of antennas is based on (10), whilst the optimization follows (12) constrained by (8b). Note that the optimal outcome can be acquired if the randomized value of x is smaller than the given learning rate of η a for antenna selections.…”

Section: ) Sequential Passing Messagementioning

confidence: 99%

“…However, joint baseband digital and analog phase shifter precoders should be designed which requires a considerably high computational complexity [11]. In [12], [13], the papers design beamforming schemes from protocol perspectives. Although deep learning can alleviate the complexity issue, it cannot derive either closed-forms or proofs of optimality and convergence [14].…”

Section: Introductionmentioning

confidence: 99%

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MARS: Message Passing for Antenna and RF Chain Selection for Hybrid Beamforming in MIMO Communication Systems

Shen¹,

Lo²,

Feng³

et al. 2022

Preprint

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In this paper, we consider a prospective receiving hybrid beamforming structure consisting of several radio frequency (RF) chains and abundant antenna elements in multi-input multi-output (MIMO) systems. Due to conventional costly full connections, we design an enhanced partially-connected beamformer employing low-density parity-check (LDPC) based structure. As a benefit of LDPC-based structure, information can be exchanged among clustered RF/antenna groups, which results in a low com-Hybrid beamforming, MIMO, LDPC-based connection, antenna selection, RF chain selection, message passing, power consumption, energy efficiency.

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Section: A Mars-s Of Sequential Message Passingmentioning

confidence: 99%

Section: ) Sequential Passing Messagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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MARS: Message Passing for Antenna and RF Chain Selection for Hybrid Beamforming in MIMO Communication Systems

Shen¹,

Lo²,

Feng³

et al. 2022

Preprint

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“…In [3], enhanced RA procedure with beam training for high density networks is proposed which is compatible with 802.11ad and 802.11ay. In [4], multi-user association and beam training with flexible training slots is proposed to avoid collision. RA for millimeter wave non-orthogonal multiple access (NOMA) has been proposed in [5].…”

Section: Introductionmentioning

confidence: 99%

Fast Beam Training for RIS-Assisted Uplink Communication

Singh¹,

Singh²,

Liu³

2021

Preprint

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In this work, we propose a beam training codebook for Reconfigurable Intelligent Surface (RIS) assisted mmWave uplink communication. Beam training procedure is important to establish a reliable link between user node and Access point (AP). A codebook based training procedure reduces the search time to obtain best possible phase shift by RIS controller to align incident beam at RIS in the direction of receiving node. We consider a semi passive RIS to assist RIS controller with a feedback of minimum overhead. It is shown that the procedure detects a mobile node with high probability in a short interval of time. Further we use the same codebook at user node to know the desired direction of communication via RIS.

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“…As for the unlicensed mmWave frequency bands, IEEE 802.11ad [4] and IEEE 802.11ay [5] have standardized 60-GHz mmWave scenarios, requirements and transmission protocols for wireless local area networks (WLANs). Moreover, the wireless-gigabit (WiGig) initiative develops commercialized 60-GHz solutions for high-rate transmission in addition to the mmWave WLAN protocols [6], [7].…”

mentioning

confidence: 99%

Coordinated Multiple Access Point Multiuser Beamforming Training Protocol for Millimeter Wave WLANs

Shen

Feng

Hanzo

2020

IEEE Trans. Veh. Technol.

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Millimeter wave (mmWave) systems have attracted considerable attention as a benefit of their Gbps services. Therefore, wireless-gigabit (WiGig) transmission has been developed based on the IEEE 802.11ad and 802.11ay standards of wireless local area networks (WLANs) in the 60-GHz band. To overcome the high path loss of mmWave, beamforming and beam-sector based training protocols are specified in 802.11ad/ay. With the increase in service demand, more WiGig access points (APs) will be deployed, hence the transmission frame structure of beam control should be adjustable for supporting both multiple APs and multiple users. The conventional exhaustive beam search (EBS) scheme has a potentially excessive complexity for high number of beams. Furthermore, assigning fixed training slots for users will lead to high-latency beam training under EBS. Hence, we design an advanced protocol for multiple APs and multiple users. Based on this protocol, we propose coordinated multiple AP multiuser training (CMMBT) including variable length framing and adjustable beam training. Our simulations demonstrate that CMMBT provides flexible training control and achieves the lowest training latency and highest average throughput performance amongst the state-of-the-art solutions in the open literature. Index Terms-Millimeter wave communications, wireless local area networks, multiuser association, beamforming training, non-slotted frame structure. I. INTRODUCTION The increasing number of wireless devices and the rapid evolution of high-rate applications such as high definition video streaming have led to a considerable increase in the amount of wireless tele-traffic [1]. This issue is critical both for industry and academia, since the existing sub-6 GHz communication systems are simply unable to support the simultaneous high-rate service demands of a large number of connections. Hence, millimeter wave (mmWave) solutions having high spectral resources have attracted increasing attention in the context of next-generation systems [2]. Therefore, several international organizations are developing mmWave

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Design and Analysis of Multi-User Association and Beam Training Schemes for Millimeter Wave Based WLANs

Cited by 10 publications

References 22 publications

MARS: Message Passing for Antenna and RF Chain Selection for Hybrid Beamforming in MIMO Communication Systems

MARS: Message Passing for Antenna and RF Chain Selection for Hybrid Beamforming in MIMO Communication Systems

Fast Beam Training for RIS-Assisted Uplink Communication

Coordinated Multiple Access Point Multiuser Beamforming Training Protocol for Millimeter Wave WLANs

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