System Theory Based Multiple Beamforming

Trung, Nguyen Huu; Anh, Nguyen Thuy; Duc, Nguyen Minh; Binh, Doan Thanh; Tan, Le Trung

doi:10.15625/2525-2518/55/5/9149

Cited by 3 publications

(3 citation statements)

References 9 publications

(16 reference statements)

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“…The SDoF is defined as the number of singular values of the propagation channel matrix that exceeds the noise level. SDoF represents the number of bit streams that can be simultaneously transmitted, and it is equivalent to the number of orthogonal beams that must be generated simultaneously to transmit independent bit streams [41]. The gNB can simultaneously transmit the maximum of r data streams to the target UE, thereby increasing channel throughput.…”

Section: ) Ue Classification and Beam Assignmentmentioning

confidence: 99%

Beamforming-as-a-Service for Multicast and Broadcast Services in 5G Systems and Beyond

Trung,

Anh

2023

IEEE Access

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Driven by the most advanced technologies, such as massive multiple-input multiple-output (MIMO), 3D beamforming, Software-Defined Networking, and network slicing, 5G/6G systems support radio connections and end-to-end network connectivity at ultrahigh speeds, low latency, high reliability, and massive connectivity. 5G/6G networks promise a faster, more streamlined future for broadcasters. It can handle rapid changes, along with improved quality standards in broadcasting. However, broadcasting services are becoming increasingly distributed and prevalent; thus, how to effectively provide broadcast services to end users has recently become a natural concern. In this paper, we propose a novel concept of Beamforming-as-a-Service (BFaaS) for delivering multicast and broadcast services in 5G/6G networks. We first comprehensively overview and study background standards and industrial activities through broadcast projects that have been carried over 5G platforms. Then, we shed light on the requirements of providing multicast and broadcast services to end users and the importance of beamforming in delivering multicast and broadcast services in 5G/6G networks. From this point, we define the BFaaS concept and vision and the benefits of the proposed BFaaS scheme. Next, we discuss the beam generation process, beamforming control and the channel model which is used in the proposed system model analysis. As a step further, with the proposed system model, we propose optimal algorithms for allocating beams to different service areas. The simulation results demonstrated the effectiveness of the proposed BFaaS scheme. Finally, we summarize the paper by identifying the potential areas of application of BFaaS for future research directions.INDEX TERMS 5G networks, terrestrial broadcasting, broadband, multicast and broadcast services, new radio, as-a-service, beamforming.NGUYEN HUU TRUNG received the Dipl.Eng., M.E., and Ph.D. degrees from the

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Section: ) Ue Classification and Beam Assignmentmentioning

confidence: 99%

Beamforming-as-a-Service for Multicast and Broadcast Services in 5G Systems and Beyond

Trung,

Anh

2023

IEEE Access

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“…In the opposite case, with low SNR, the best thing to do is to simply choose one subchannel with the highest singular value. This is called beamforming [25,26]. We can rewrite the Eq.…”

Section: Mathematical Backgroundmentioning

confidence: 99%

Multiplexing Techniques for Applications Based-on 5G Systems

Trung¹

2022

Multiplexing - Recent Advances and Novel Applications

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Multiplexing is an important technique in modern communication systems that allows simultaneous transmission of multiple channels of information on the same transmission media. Fifth-generation (5G) mobile communication systems allow Enhanced Mobile Broadband (eMBB), Ultra Reliable Low Latency Communications (URLLC), and Massive Machine Type Communications (mMTC). 5G has carrier frequency bands from sub-1 GHz to mid-bands and millimetre waves. The sub-1 GHz frequency band is for mobile broadband, broadcast and massive IoT applications. The mid-bands (between 1–6 GHz) offer wider bandwidths, focusing on mobile broadband and mission-critical applications. The frequency bands above 24 GHz (mmWaves) support super wide bandwidth applications over short, line-of-sight coverage. For each application on a corresponding frequency band, 5G allows defining of an optimized waveform from a family of waveforms. 5G uses massive MIMO, NOMA and network slicing techniques which allows spatial multiplexing and multibeam multiplexing. Multiplexing techniques play a major role in 5G systems in terms of data rate and bandwidth efficiency. This chapter presents multiplexing techniques for applications based-on 5G systems.

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“…Figure 2 illustrates the dual-polarized MIMO precoder as a digital precoder for each data stream input. The precoder is designed based on spatial multiplexing (SM) to increase the channel spectral efficiency by providing reliable performance over erasure channel [28]. The digital precoder consists of three different steps of linear precoding, phase hopping, and power calibration.…”

Section: System Model Descriptionmentioning

confidence: 99%

Capacity Improvement for DVB-NGH with Dual-Polarized MIMO Spatial Multiplexing and Hybrid Beamforming

Nguyen

2020

International Journal of Digital Multimedia Broadcasting

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Multiple-input multiple-output (MIMO) antenna scheme is an effective technique for future terrestrial broadcasting systems such as digital video broadcasting-next-generation handheld (DVB-NGH) to overcome the limits on information theory of traditional single-antenna wireless communications without any additional bandwidth or increased transmit power. In this paper, we propose a hybrid beamforming scheme for dual-polarized MIMO spatial multiplexing DVB-NGH broadcasting systems. The system of interest makes use of phase shifters and amplitude attenuators for the digital-analog precoder at beamforming stage of the transmitter end to maximize the signal-to-noise ratio to increase the channel capacity of the DVB-NGH systems. At the receiver end, the maximum likelihood (ML) detector is used to evaluate the system performance. We consider the signal-to-interference-and-noise ratio (SINR) and the achievable average capacity for the DVB-NGH MIMO with various FFT sizes, number of transmit antennas, and different modulation schemes. The performance results on bit error rate, channel capacity, and beampatterns show that the proposed hybrid beamforming and dual-polarized MIMO spatial multiplexing schemes provide more robustness against signal interference by beamforming and/or nulling techniques. The simulation results also show that the proposed system achieves higher capacity than the existing MIMO schemes for the DVB-NGH systems.

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System Theory Based Multiple Beamforming

Cited by 3 publications

References 9 publications

Beamforming-as-a-Service for Multicast and Broadcast Services in 5G Systems and Beyond

Beamforming-as-a-Service for Multicast and Broadcast Services in 5G Systems and Beyond

Multiplexing Techniques for Applications Based-on 5G Systems

Capacity Improvement for DVB-NGH with Dual-Polarized MIMO Spatial Multiplexing and Hybrid Beamforming

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