A 3D Geometry-Based THz Channel Model for 6G Ultra Massive MIMO Systems

Yuan, Yuan; He, Ruisi; Ai, Bo; Ma, Zhangfeng; Miao, Yang; Niu, Yong; Zhang, Jiayi; Chen, Ruifeng; Zhang, Zhong

doi:10.1109/tvt.2022.3143500

Cited by 40 publications

(6 citation statements)

References 69 publications

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“…THz channel parameters is compose of molecular absorption coefficient parameters which are directly retrieved from the high-resolution transmission molecular absorption (HITRAN) database [46] and MP parameters. Note that the THz channel of farther apart Tx-Rx pair generally consists of fewer clusters [47], especially in outdoor scenarios, where the average number of clusters is only around 3 [30], [48]. To this end, the simulator sets an upper bound of the number of clusters Specifically, motion management module first generates the position and mobility of the ISAC system and UE.…”

Section: A Simulator Architecturementioning

confidence: 99%

Comprehensive Link-Level Simulator for Terahertz MIMO Integrated Sensing and Communication Systems with TDD Framework

Shi,

Yang,

Peng

2024

Preprint

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Terahertz (THz) integrated sensing and communication (ISAC) with multiple-input multiple-output (MIMO) architecture is recognized as a promising interdisciplinary technology for ultra-high-rate mobile communications since the systems enable narrow beam tracking which is necessary in the THz band. In this work, a link-level simulator for THz MIMO ISAC in time-division duplex (TDD) operation is proposed to design and analyze mobile systems. Compared to the simulators in the literature, the proposed simulator is more practical and comprehensive, employing two-dimensional motion simulation instead of numerical evaluation, and considering THz characteristics such as wideband echo, multipath components and molecular absorption. Specifically, the simulator supports the standard orthogonal frequency division multiplexing (OFDM) and discrete Fourier transform spread OFDM (DFT-s-OFDM) waveforms for sensing and communication simultaneously. Trade-offs between communication and sensing metrics required for waveform numerology design are investigated. In particular, by exploiting TDD framework's integration capability, range-velocity-angle estimation with virtual array and sensing-aided downlink spatial multiplexing are co-designed. Additionally, a user interface with elaborate parameter configuration is introduced. Finally, we implement an urban vehicle-to-vehicle (V2V) application case to verify the simulator. The simulation results present the feasibility of the developed integrated architecture.

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Section: A Simulator Architecturementioning

confidence: 99%

Comprehensive Link-Level Simulator for Terahertz MIMO Integrated Sensing and Communication Systems with TDD Framework

Shi,

Yang,

Peng

2024

Preprint

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“…To enhance the spectrum efficiency, a joint ultra massive MIMO radar communication system has been evolved. It involves the communication between the base station and the user with multiple antenna user equipment, such that the base station tracks the target of the radar using multiple beams by directing toward the target and the receiver [175]. The communication scenario for ultra-massive MIMO is shown in Fig.…”

Section: Ultra Massive Mimomentioning

confidence: 99%

6G: Technology Evolution in Future Wireless Networks

Shafi,

Jha,

Jain

2024

IEEE Access

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The Sixth Generation (6G) Wireless Communication Network (WCN) is the successive provision to ameliorate the gain with ultra-low latency, and e xtremely high energy efficiency. The 6G WCN enables the specifications of artificial intelligence to optimize the services and capabilities. The vision of the 6G era is expected to address a seamless fusion of communication between the human, physical world, and digital world. The latest 6G WCN standard is a fundamental foundation and requires immense attention in the field of research. This paper presents the framework of 6G WCN with an illustration of its key technologies. The different technologies involved in 6G are well explained with the demonstration of the communication scenario such that the key performance indicators are improved with major differences. The primary contribution of this paper is the explanation of the 6G with the technologies that have a drastic impact on the characteristic aspects of a wireless communication network such as data rate, spectrum efficiency, energy efficiency, connection density, and reliability. All these technologies have the capability to revolutionize the subsequent WCN.

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“…Furthermore, it permits the creation of concentrated beams in any horizontal direction [21]. To reduce the computational complexity of the 3D GBSM channel model, we define the antenna element location vector using the physical dimension of the antenna array and incorporate it into the 3D channel model [21,96,97]. To enhance the performance of the proposed mMIMO CR-NOMA system, two coding schemes, AF and DF, are used with the channel model.…”

Section: Contribution Of the Workmentioning

confidence: 99%

Performance of Cooperative Relay NOMA with Large Antenna Transmitters

et al. 2022

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The potential of the Non-Orthogonal Multiple Access (NOMA) approach for wireless communications in the fifth generation (5G) and beyond can not be underestimated. This is because users with favorable channel conditions can serve as relays to improve system performance by employing Successive Interference Cancellation (SIC). Lately, the combination of NOMA and the cooperative relay has attracted the interest of researchers. The analysis of cooperative relay NOMA (CR-NOMA) with a massive multiple-input multiple-output (mMIMO) system is mainly based on theoretical channel models such as the correlated-based stochastic channel model (CBSM) even though the geometric-based stochastic channel model (GBSM) has been found to provide better, practical and realistic channel properties. This, in our view, is due to computational challenges. Again, the performance of CR-NOMA systems using the GBSM channel model with large antenna transmitters and network coding schemes has attracted little attention in academia. Therefore, the need to study mMIMO CR-NOMA that considers channel properties such as path-loss, delay profile and tilt angle has become vital. Furthermore, the co-existing of large antenna transmitters with coding schemes needs further investigation. In this paper, we study the performance of a two-stage mMIMO CR-NOMA network where the transmitter is represented as a uniform rectangular array (URA) or cylindrical array (CA). The communication channel from the transmitter (TX) to the user equipment (UE) through a relay station (RS) is modeled with a 3GPP’s three-dimensional (3D) GBSM mMIMO channel model. To improve the analytical tractability of 3D GBSM, we defined the antenna element location vectors using the physical dimension of the antenna array and incorporated them into the 3D channel model. Bit-error rates, achievable rates and outage probabilities (OP) are examined using amplify-and-forward (AF) and decode-and-forward (DF) coding schemes. Results obtained show with fixed power allocation and SNR of 20 dB, far or weak users can attain a high achievable rate using DF and URA. Again, from the results, the combination of AF and CA presents better outage probabilities. Finally, the results indicate that the performance difference between CBSM and GBSM is marginal, even though the proposed 3D GBSM channel model has a higher degree of random parameters and computational complexities.

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A 3D Geometry-Based THz Channel Model for 6G Ultra Massive MIMO Systems

Cited by 40 publications

References 69 publications

Comprehensive Link-Level Simulator for Terahertz MIMO Integrated Sensing and Communication Systems with TDD Framework

Comprehensive Link-Level Simulator for Terahertz MIMO Integrated Sensing and Communication Systems with TDD Framework

6G: Technology Evolution in Future Wireless Networks

Performance of Cooperative Relay NOMA with Large Antenna Transmitters

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