Throughput Modeling and Validations for MIMO-OTA Testing With Arbitrary Multipath

Chen, Xiaoming; Fan, Wei; Hentilä, Lassi; Kyösti, Pekka

doi:10.1109/lawp.2018.2808357

Cited by 26 publications

(11 citation statements)

References 11 publications

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“…Note that B C is applicable to the case that the coherence bandwidth is defined as the bandwidth over which the complex correlation function has decreased from 1 to 0.5 [28]. It should be stressed that the OFDM technique can offer frequency diversity [2,29]. Hence, the intrinsic frequency stirring caused by the DUT must be taken into consideration when the OFDM technique is used in the downlink transmission (when the DUT is used as a receiver).…”

Section: Measurements and Resultsmentioning

confidence: 99%

“…The application of wireless-Internet-of-Things (W-IOT) is currently being widely adopted in our daily lives. Consequently, over-the-air (OTA) tests of wireless devices have attracted considerable attention from both industry and academia [1][2][3][4][5][6]. The reverberation chamber (RC) is an electrically large conducting cavity with various mode-stirring mechanisms to create a random and statistically homogeneous environment [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Statistical analysis of measurement uncertainty in total radiated power of wireless devices in reverberation chamber

Xue

Chen

et al. 2020

IET Microwaves, Antennas & Propagation

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Due to the explosive increase of wireless devices, efficient over‐the‐air testing of such devices is highly desirable. The reverberation chamber (RC) offers efficient and cost‐effective means to determine performance metrics of wireless devices, such as total radiated power (TRP). In this study, the distribution of the measured TRP in an RC is analytically derived, based on which the statistics (i.e. mean, variance) of the measured TRP are derived as well. RC measurements have been performed to verify the analytically derived statistics.

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Section: Measurements and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Statistical analysis of measurement uncertainty in total radiated power of wireless devices in reverberation chamber

Xue

Chen

et al. 2020

IET Microwaves, Antennas & Propagation

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“…While the MIMO throughput [25] has been chosen as the standard performance metric for LTE MIMO-OTA testing [26], performance metrics for mmWave OTA testing have not been standardized yet. Since the channel properties in the frequency (delay) and time (Doppler frequency) domains are solely determined by the CE, the spatial domain statistical properties, i.e., spatial correlation and PAS, are usually regarded as suitable performance metrics for evaluating the accuracy of the mmWave OTA testing.…”

Section: Simulation and Discussionmentioning

confidence: 99%

Comparing Channel Emulation Algorithms by Using Plane Waves and Spherical Vector Waves in Multiprobe Anechoic Chamber Setups

Miao

Fan

Takada

et al. 2019

IEEE Trans. Antennas Propagat.

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The sectored multi-probe anechoic chamber (MPAC) is regarded as a promising millimeter-wave (mmWave) over-the-air (OTA) testing solution. However, there are still debates in the literature about which channel emulation method, i.e., pre-faded synthesis (PFS) or plane wave synthesis (PWS), should be used for the sectored MPAC testing system. In this paper, a thorough comparison between the two channel emulation methods is conducted. It is found that for sectored MPAC (where the active probes are unlikely to be uniformly distributed over the probe panel) the PWS is more accurate than the PFS in line-of-sight (LOS) scenarios and less accurate than the PFS in non-LOS (NLOS) scenarios. Explanations are given.Index Terms-millimeter-wave (mmWave), multi-probe anechoic chamber (MPAC), over-the-air (OTA), plane wave synthesis (PWS), pre-faded synthesis (PFS)

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“…A modern wireless communication receiver with error detection and correction capability is modeled as [45] 1, 0, The throughput data rate of MIMO communication system for dealing with error correction codes is expressed as [47] This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/ This article has been accepted for publication in a future issue of this journal, but has not been fully edited.…”

Section: Received Signal Characterizationmentioning

confidence: 99%

Green HSR Reliable Communication With LTE-R Using MIMO-DPD

Agrawal

Rawat

2021

IEEE Access

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Reliable and efficient High-speed Railways (HSR) is the key component to the concept of Green Smart Cities to combat the prevailing traffic congestion on roads and increasing greenhouse gases in the atmosphere. It is also a fast, safe, and economical transport medium. Long Term Evolution -Railways (LTE-R), though in the developing stage, is a new wireless communications standard for providing intelligent broadband communication services to passengers and train operators. Reliable HSR communication requires more base stations (BSs). The radio frequency power amplifier (RFPA), an integral part of the BS, dominates the overall energy consumption and is inherently nonlinear. Digital Predistortion (DPD), the ultimate Green communication technique, is used to linearize RFPAs and provide less power waste. Multiple-input-multiple-output (MIMO) schemes have been used to achieve enhanced data throughputs and superior transmission reliability. This paper analyzes the effect of DPD arrangement corresponding to these schemes for reliable HSR communication in infrastructure-to-train and inside-station scenarios. The authors consider downlink transmission for the LTE-R specifications at different train speeds. Furthermore, the paper proposes an analytical framework to evaluate the performance of the complete HSR MIMO communications system. This analytical framework characterizes the antenna effects on the Block Error Rate (BLER) and throughput by adopting various transmission modes, viz. SISO, MISO, SIMO and MIMO. Numerical analyses and simulations for the proposed system illustrate better reliability and high throughput performances with higher-order MIMO configurations. Moreover, significant energy savings can be realized by universally deploying DPD across the HSR network in Smart Cities.

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Throughput Modeling and Validations for MIMO-OTA Testing With Arbitrary Multipath

Cited by 26 publications

References 11 publications

Statistical analysis of measurement uncertainty in total radiated power of wireless devices in reverberation chamber

Statistical analysis of measurement uncertainty in total radiated power of wireless devices in reverberation chamber

Comparing Channel Emulation Algorithms by Using Plane Waves and Spherical Vector Waves in Multiprobe Anechoic Chamber Setups

Green HSR Reliable Communication With LTE-R Using MIMO-DPD

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