Beam codebook based beamforming protocol for multi-Gbps millimeter-wave WPAN systems

Wang, Junyi; Zhou, Lan; Pyo, Cheol Sig; Baykaş, Tunçer; Sum, Chin-Sean; Rahman, Mohammad Azizur; Gao, Jing; Funada, Ryuhei; Kojima, Fumihide; Harada, Hiroshi; Kato, S.

doi:10.1109/jsac.2009.091009

Cited by 658 publications

(21 citation statements)

References 7 publications

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“…Conventional BA solutions that rely on an exhaustive search of the optimal Tx/Rx beam pair are too time demanding for vehicular scenarios due to the latency constraints. To speed up the BA procedure, different solutions have been proposed in the literature [22][23][24][25][26][27][28]. The authors of [29] propose to explore the channel and queue state information to optimize both transmission and reception beamwidths.…”

Section: Millimeter-wave V2x Communicationmentioning

confidence: 99%

Sensor-Aided V2X Beam Tracking for Connected Automated Driving: Distributed Architecture and Processing Algorithms

Brambilla

Combi

Matera

et al. 2020

Sensors

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This paper focuses on ultra-reliable low-latency Vehicle-to-Anything (V2X) communications able to meet the extreme requirements of high Levels of Automation (LoA) use cases. We introduce a system architecture and processing algorithms for the alignment of highly collimated V2X beams based either on millimeter-Wave (mmW) or Free-Space Optics (FSO). Beam-based V2X communications mainly suffer from blockage and pointing misalignment issues. This work focuses on the latter case, which is addressed by proposing a V2X architecture that enables a sensor-aided beam-tracking strategy to counteract the detrimental effect of vibrations and tilting dynamics. A parallel low-rate, low-latency, and reliable control link, in fact, is used to exchange data on vehicle kinematics (i.e., position and orientation) that assists the beam-pointing along the line-of-sight between V2X transceivers (i.e., the dominant multipath component for mmW, or the direct link for FSO). This link can be based on sub-6 GHz V2X communication, as in 5G frequency range 1 (FR1). Performance assessments are carried out to validate the robustness of the proposed methodology in coping with misalignment induced by vehicle dynamics. Numerical results show that highly directional mmW and/or FSO communications are promising candidates for massive data-rate vehicular communications even in high mobility scenarios.

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Section: Millimeter-wave V2x Communicationmentioning

confidence: 99%

Sensor-Aided V2X Beam Tracking for Connected Automated Driving: Distributed Architecture and Processing Algorithms

Brambilla

Combi

Matera

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…The phase angles are estimated with the help of Equation (19), and the estimated phase angles are used to construct the entries of AP t with the help of Equation (20). The DP t is estimated by using the entries of AP t with the help of Equation (22). All the entries of AP t are updated by using the entries of DP t .…”

Section: Alternating Optimization Algorithm and The Computation Of Opmentioning

confidence: 99%

“…The researchers also proposed the analogue-only beamforming to address the above-mentioned problem. Actually, the analogue beamforming consists of the network of analogue phase shifters, where the phase shifters are used to steer the transmitting and receiving beams in the intended directions by changing the phases of the signals [20][21][22]. However, the analogue beamforming is dependent on the phase angles quantization of signals and cannot support the multi-stream communication.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Energy Efficiency of mmWave Massive MIMO by Modifying the RF Circuit Configuration

Uthansakul

Khan

2019

Energies

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Hybrid architectures are used in the Millimeter wave (mmWave) Massive MIMO systems, which use a smaller number of RF chains and reduces the power and energy consumption of the mmWave Massive MIMO systems. However, the majority of the hybrid architectures employs the conventional circuit configuration by connecting each of the RF chains with all the transmitting antennas at the base station. As a result, the conventional circuit configuration requires a large number of phase shifters, combiners, and low-end amplifiers. In this paper, we modify the RF circuit configuration by connecting each of the RF chains with some of the transmitting antennas of mmWave Massive MIMO. Furthermore, the hybrid analogue/digital precoders and decoders along with the overall circuit power consumptions are modelled for the modified RF circuit configuration. In addition, we propose the alternating optimization algorithm to enhance the optimal energy efficiency and compute the optimal system parameters of the mmWave Massive MIMO system. The proposed framework provides deeper insights of the optimal system parameters in terms of throughput, consumed power and the corresponding energy efficiency. Finally, the simulation results validate the proposed framework, where it can be seen that the proposed algorithm significantly reduces the power and energy consumptions, with a little compromise on the system spectral gain.

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“…For a millimeter wave system using a large array antenna, hardware using digital precoding is costly and energy intensive. Affected by digital precoding power consumption and implementation of large complexity, the literature [14] proposed analog beamforming, through the constant mode phase shifter to adjust the phase of the transmitted signal. However, since the analog precoding vector elements are limited by the constant mode, the system performance is worse than the unrestricted digital precoding and is suitable for the single-stream transmission case, and the multi-stream or multi-user transmission is complicated.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Algorithm for mmWave MIMO Systems

et al. 2019

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Efficient and Symmetry based precoding plays a key role in wireless communications. In order to improve the transmission performance of multi-user millimeter wave Multiple-Input Multiple-Output (MIMO) (MU-mmWave MIMO) systems, this paper proposes an analog precoding scheme for the receiver of mmWave MIMO with split sub-array hybrid analog and digital architecture. Then, we propose a hybrid analog and digital precoding algorithm based on channel reciprocity (APoCR) to maximize the spectral efficiency by utilizing the triple joint optimization problem, which can be divided into the analog and digital part. The analog combination vectors (ACVs) are obtained by the signal-to-interference-and-noise ratio (SINR) reception maximization of each downlink user and the analog precoding vectors (APVs) are obtained by the SINR reception maximization of each uplink antenna array. The digital precoder of the transmitter is designed after the analog part optimization to alleviate the interference between multiple data streams of the users. The simulation results show that the proposed precoding algorithm has a better sum rate, fast convergence, and improved SINR than the other state-of-the-art algorithms.

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Beam codebook based beamforming protocol for multi-Gbps millimeter-wave WPAN systems

Cited by 658 publications

References 7 publications

Sensor-Aided V2X Beam Tracking for Connected Automated Driving: Distributed Architecture and Processing Algorithms

Sensor-Aided V2X Beam Tracking for Connected Automated Driving: Distributed Architecture and Processing Algorithms

Enhancing the Energy Efficiency of mmWave Massive MIMO by Modifying the RF Circuit Configuration

An Efficient Algorithm for mmWave MIMO Systems

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