Novel 3-D Irregular-Shaped Model for Massive MIMO V2V Channels in Street Scattering Environments

Ma, Nan; Chen, Jianqiao; Zhang, Ping; Yang, Xiaoli

doi:10.1109/lwc.2020.2993237

Cited by 13 publications

(4 citation statements)

References 13 publications

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“…Let the target signal-to-interference ratio for the far user be denoted by χ, which can be written as χ = 2 R * À 1: The expression given in (11) is expressed as follows:…”

Section: Dynamic Power Allocation 31 Power Allocation In Nomamentioning

confidence: 99%

“…[5][6][7][8] In 5G networks, mmWave multiple-input multiple-output (MIMO) exploits the previously unused high-frequency bands for high data rate transmission, and massive MIMO uses a large number of antennas (250-500) to spatially multiplex a large number of devices/ users. [9][10][11] Finally, non-orthogonal asynchronous transmission in non-orthogonal multiple access (NOMA) [12][13][14][15] cooperative communication [16][17][18] using relays and unlicensed access made possible by cognitive radio [19][20][21] can help connect a large number of sensors in the 5G ecosystem toward the realization of smart homes, cities, and industries.…”

Section: Introductionmentioning

confidence: 99%

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Examination of a non-orthogonal multiple access scheme for next generation wireless networks

Shankar¹

2020

Journal of Defense Modeling & Simulation

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Non-orthogonal multiple access (NOMA) is an important technique that enables fifth-generation (5G) wireless systems to satisfy the heterogeneous requirements of enhanced fairness, huge connectivity, high performance, low latency, and high reliability. In this work, the NOMA technique for 5G wireless communication is investigated, and considering user fairness limitations, the channel capacity has been optimized. Also, bandwidth efficiency (BE) is examined and the relationship between BE and energy efficiency (EE) is derived. Simulation results show that without wasting power the near user gets preference in power allocation when the target rate is greater than 6.4 bps/Hz. Also, when the target rate [Formula: see text] 6.4 bps/Hz, the outage performance of the near user will improve and the performance of the far user will remain the same. Also, it is demonstrated that cooperative NOMA outperforms all other techniques. Simulation outcomes confirm that NOMA performs better than conventional multiple access techniques in terms of EE and BE.

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“…Let the target signal-to-interference ratio for the far user be denoted by χ, which can be written as χ = 2 R * À 1: The expression given in (11) is expressed as follows:…”

Section: Dynamic Power Allocation 31 Power Allocation In Nomamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Examination of a non-orthogonal multiple access scheme for next generation wireless networks

Shankar¹

2020

Journal of Defense Modeling & Simulation

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“…The comparison of the characteristics of different clusters is vital for analyzing the contribution of different multipath components to the variation trend of statistical properties. In addition, compared with uniform linear arrays (ULAs), uniform planar arrays (UPAs) can be equipped with more antennas in limited space and greatly enhance space utilization; thus, they have profound research value in the MIMO system [46,47]. Analogously, the scarcity of UPA deployments for UAV channels results in little exploration of array evolution for UPAs.…”

Section: Introductionmentioning

confidence: 99%

A Non-Stationary Cluster-Based Channel Model for Low-Altitude Unmanned-Aerial-Vehicle-to-Vehicle Communications

Su,

Li,

Chen

2023

Drones

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Under the framework of sixth-generation (6G) wireless communications, the unmanned aerial vehicle (UAV) plays an irreplaceable role in a number of communication systems. In this paper, a novel cluster-based low-altitude UAV-to-vehicle (U2V) non-stationary channel model with uniform planar antenna arrays (UPAs) is proposed. In order to comprehensively model the scattering environment, both single and twin clusters are taken into account. A novel continuous cluster evolution algorithm that integrates time evolution and array evolution is developed to capture channel non-stationarity. In the proposed algorithm, the link between the time evolution of twin clusters and that of single clusters is established to regulate the temporal evolution trend. Moreover, an improved observable radius method is applied to UPAs for the first time to describe array evolution. Based on the combination of cluster evolution and time-variant channel parameters, some vital statistical properties are derived and analyzed, including space–time correlation function (ST-CF), angular power spectrum density (PSD), Doppler PSD, Doppler spread (DS), frequency correlation function (FCF), and delay spread (RS). The non-stationarity in the time, space, and frequency domain is captured. It demonstrates that the airspeed, density of scatterers within clusters, and carrier frequency have an impact on statistical properties. Furthermore, twin clusters have more flexible spatial characteristics with lower power than single clusters. These conclusions can provide assistance and reference for the design and deployment of 6G UAV communication systems.

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“…The V2V channel has apparent differences compared with the traditional cellular communication channel, such as lower antenna height, faster moving speed of transmitters (TXs) and receivers (RXs), different frequency bands, etc. Therefore, it is important to conduct targeted research on the V2V channel [3][4][5][6][7]. In V2V scenarios with high mobility and multipath propagation, two significant factors come into play: the Doppler effect caused by high mobility and the delay spread caused by multipath propagation.…”

Section: Introductionmentioning

confidence: 99%

Efficient Index Modulation-Based MIMO OFDM Data Transmission and Detection for V2V Highly Dispersive Channels

et al. 2023

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Vehicle-to-vehicle (V2V) communication networks are based on vehicles that wirelessly exchange data, traffic congestion, and safety warnings between them. The design of new V2V systems requires increasingly energetically and spectrally efficient systems. Conventional multiple-input–multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems have been used successfully for the last decade. However, MIMO-OFDM systems need to be improved to face future communication networks in high-mobility environments. This article proposes an efficient index modulation (IM)-based MIMO-OFDM system for V2V channels. The proposed transmission system is evaluated in high Doppler-spread channels. The results demonstrate that the proposed scheme reduces the required computational complexity in data detection and exhibits gains of up to 3 dB in bit error rate (BER) performance when compared to the conventional MIMO-OFDM system under the same conditions and parameters, along with achieving superior spectral efficiency. The results show the viability of implementing the proposed system in practical applications for high-transmission-rate V2V channels.

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Novel 3-D Irregular-Shaped Model for Massive MIMO V2V Channels in Street Scattering Environments

Cited by 13 publications

References 13 publications

Examination of a non-orthogonal multiple access scheme for next generation wireless networks

Examination of a non-orthogonal multiple access scheme for next generation wireless networks

A Non-Stationary Cluster-Based Channel Model for Low-Altitude Unmanned-Aerial-Vehicle-to-Vehicle Communications

Efficient Index Modulation-Based MIMO OFDM Data Transmission and Detection for V2V Highly Dispersive Channels

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