An Efficient Interference-Aware Constrained Massive MIMO Beamforming for mm-Wave JSDM

Bayraktar, Murat; Güvensen, Gökhan M.

doi:10.1109/access.2021.3089677

Cited by 9 publications

(2 citation statements)

References 47 publications

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“…The techniques used in broadband communications mainly include single-carrier frequency domain equalization (SC-FDE) and orthogonal frequency division multiplexing (OFDM). Considering the requirement of linearity of the power amplifier and simplicity of the transmitter, the proposed high-speed digital baseband wireless communication system is based on the SC-FDE technique [12][13]. The diagram of the proposed system is shown in figure 1.…”

Section: System Structurementioning

confidence: 99%

A 3D Modulation Scheme for High-speed Baseband Digital Communication System

Feng

Lai

Zhu

et al. 2022

J. Phys.: Conf. Ser.

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To improve the transmission rate of wireless communications, the communication frequency band will gradually go higher, and the use of millimeter wave and terahertz will become mainstream in the future. However, the signal attenuation in high bands is considerable, which prevents the achievement of long-distance transmissions. In this paper, we propose a 3D modulation scheme that is especially suitable for high-speed baseband digital communication systems. The proposed scheme is simulated and tested in an experiment. With the same order of modulation, the 3D modulation shows a significant decrement in bit error rate and enables a longer transmission distance.

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Section: System Structurementioning

confidence: 99%

A 3D Modulation Scheme for High-speed Baseband Digital Communication System

Feng

Lai

Zhu

et al. 2022

J. Phys.: Conf. Ser.

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“…(III) Interference Constraints. Although the beam is directional, in heterogeneous environments with multiple transmitters, users in neighboring cells still have high interference if they use the same frequency [3], particularly users who are located close to the cell's edge [4]. Therefore, some beam candidates cannot be used for data transmission.…”

Section: Introductionmentioning

confidence: 99%

Interference Constrained Beam Alignment for Time-Varying Channels via Kernelized Bandits

Deng¹,

Zhou²,

Ghosh³

et al. 2022

Preprint

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To fully utilize the abundant spectrum resources in millimeter wave (mmWave), Beam Alignment (BA) is necessary for large antenna arrays to achieve large array gains. In practical dynamic wireless environments, channel modeling is challenging due to time-varying and multipath effects. In this paper, we formulate the beam alignment problem as a nonstationary online learning problem with the objective to maximize the received signal strength under interference constraint. In particular, we employ the non-stationary kernelized bandit to leverage the correlation among beams and model the complex beamforming and multipath channel functions. Furthermore, to mitigate interference to other user equipment, we leverage the primal-dual method to design a constrained UCB-type kernelized bandit algorithm. Our theoretical analysis indicates that the proposed algorithm can adaptively adjust the beam in timevarying environments, such that both the cumulative regret of the received signal and constraint violations have sublinear bounds with respect to time. This result is of independent interest for applications such as adaptive pricing and news ranking. In addition, the algorithm assumes the channel is a black-box function and does not require any prior knowledge for dynamic channel modeling, and thus is applicable in a variety of scenarios. We further show that if the information about the channel variation is known, the algorithm will have better theoretical guarantees and performance. Finally, we conduct simulations to highlight the effectiveness of the proposed algorithm.

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An Adaptive Hybrid Beamforming Approach for 5G-MIMO mmWave Wireless Cellular Networks

et al. 2021

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Hardware complexity reduction is a key concept towards the design and implementation of next generation broadband wireless networks. To this end, the goal of the study presented in this paper is to evaluate the performance of an adaptive hybrid analog-digital beamforming approach in fifth-generation (5G) massive multiple input multiple output (MIMO) millimeter wave (mmWave) wireless cellular orientations. In this context, generated beams are formed dynamically according to traffic demands, via an on-off analog activation of radiating elements per vertical antenna array, in order to serve active users requesting high data rate services without requiring any expensive and mechanical complex steering antenna system. Each vertical array, which constitutes a radiating element of a circular array configuration, has a dedicated radio frequency chain (digital part). The performance of our proposed approach is evaluated statistically, by executing a sufficient number of independent Monte Carlo simulations per MIMO configuration, via a developed systemlevel simulator incorporating the latest 5G-3GPP channel model. According to the presented results, the adaptive beamforming approach can improve various key performance indicators (KPIs) of the wireless orientation, such as total downlink transmission power and blocking probability. In particular, when studying/analyzing a MIMO configuration with 15 vertical antenna arrays and10 radiating elements per array, then, depending on the tolerable amount of transmission overhead, the proposed adaptive algorithm can significantly reduce the number of active radiating antenna elements compared to the static grid of beams case. In the same context, when keeping the number of radiating elements constant, then the total downlink transmission power as well as the blocking probability can be significantly reduced. It is important to note that all the KPIs have been extracted when deploying the developed array configuration in complex cellular orientations (two tiers of cells around the central cell).

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An Efficient Interference-Aware Constrained Massive MIMO Beamforming for mm-Wave JSDM

Cited by 9 publications

References 47 publications

A 3D Modulation Scheme for High-speed Baseband Digital Communication System

A 3D Modulation Scheme for High-speed Baseband Digital Communication System

Interference Constrained Beam Alignment for Time-Varying Channels via Kernelized Bandits

An Adaptive Hybrid Beamforming Approach for 5G-MIMO mmWave Wireless Cellular Networks

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