USRP-based indoor channel sounding for D2D and multi-hop communications

Merwaday, Arvind; Rupasinghe, Nadisanka; Güvenç, İsmail; Saad, Walid; Yüksel, Murat

doi:10.1109/wamicon.2014.6857800

Cited by 18 publications

(6 citation statements)

References 7 publications

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“…The measured average path loss (in dB) as a function of distance for UAV AG channels is obtained as follows [18] P L(d) = P L(d 0 ) + 10 log 10 ∀i P d0…”

Section: A Large Scale Parametersmentioning

confidence: 99%

UWB Channel Sounding and Modeling for UAV Air-to-Ground Propagation Channels

Khawaja

Güvenç

Matolak

2016

2016 IEEE Global Communications Conference (GLOBECOM)

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114

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Unmanned aerial vehicles (UAVs) are expected to be used extensively in the near future in applications such as aerial surveillance, transportation, and disaster assistance. The conditions under which UAVs operate are different from those of conventional piloted aircrafts. This necessitates development of new air-to-ground (AG) propagation channel models for UAVs. To our best knowledge, there are limited studies in the literature on sounding and modeling of ultrawideband (UWB) AG propagation channels. In this work, comprehensive UWB measurements are conducted for various UAV communication scenarios using Time Domain P410 UWB kits. Both time and frequency domain analysis of the measured data are carried out. Based on the measured data, stochastic path loss and multipath channel models are developed to characterize AG UWB propagation channels.

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“…The measured average path loss (in dB) as a function of distance for UAV AG channels is obtained as follows [18] P L(d) = P L(d 0 ) + 10 log 10 ∀i P d0…”

Section: A Large Scale Parametersmentioning

confidence: 99%

UWB Channel Sounding and Modeling for UAV Air-to-Ground Propagation Channels

Khawaja

Güvenç

Matolak

2016

2016 IEEE Global Communications Conference (GLOBECOM)

Self Cite

114

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“…However, the development cost and the additional calibration workload of channel soundings are quite high, and the applicable environment of the system is substantially limited. To solve the problem, the software defined radio (SDR) based channel sounders are investigated [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Development of Directionalchannel Sounder Using Usrpand Gnu Radio

Min

Saito

Takada

2017

AEJ

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MIMO channel sounding is essential for evaluating the MIMO transmission performance in real propagation environments. In this paper, we have developed a versatile channel sounder by using the GNU Radio and Universal Software Radio Peripheral (USRP) platform and the virtual antenna array method. The developed channel sounder is low cost and can be utilized flexibly for measurements in the UHF band. The performance of the developed channel sounder was validated through a T-junction cable connected test and an indoor channel measurement. The result showed that the performance quite agreed with the measurement of a VNA-based measurement system. The developed channel sounder is expected to be utilized for various kinds of propagation channel measurements.

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“…The research to be presented in this dissertation resulted in several publications in IEEE conferences and journals [22][23][24][25][26][27][28][29][30][31][32][33]. The key contributions of this dissertation can be summarized as follows.…”

Section: Contributions and Organizationmentioning

confidence: 99%

“…Assuming that the devices use orthogonal frequency division multiplexing (OFDM) modulation scheme, the BER of two-hop transmissions will be shown to be considerably smaller than the single-hop transmissions [29].…”

Section: Capacity Enhancementmentioning

confidence: 99%

“…Now, we can express the three mobility state probabilities as 29) where, h l = 4T √ λv l π , and h u = 4T √ λv u π , (7.30) are the optimum lower and upper handover count thresholds for MSD, respectively. Given the velocity thresholds v l and v u , the choice of handover count thresholds has a direct impact on the probability of correctly detecting the mobility state of a UE based on its velocity [159].…”

Section: Mobility State Probabilitiesmentioning

confidence: 99%

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Stochastic Geometry Based Analysis of Capacity, Mobility and Energy Efficiency for Dense Heterogeneous Networks

Merwaday¹

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We consider different approaches for capacity enhancement of the network. In the first approach, using stochastic geometry we theoretically analyze time domain inter-cell interference coordination techniques in a two-tier HetNet and optimize the parameters to maximize the capacity of the network. In the second approach, we consider optimization of the locations of aerial bases stations carried by the unmanned aerial vehicles (UAVs) to enhance the capacity of the network for public safety and emergency communications, in case of damaged network infrastructure. In the third approach, we introduce a subsidization scheme for the service providers through which the network capacity can be improved by using regulatory power of the government. Finally, we consider the approach of device-todevice communications and multi-hop transmissions for enhancing the capacity of a network.v Velocity estimation of high speed mobile users is important for effective mobility management in densely deployed small cell networks. In this research, we introduce two novel methods for the velocity estimation of mobile users: handover-count based velocity estimation, and sojourn time based velocity estimation. Using the tools from stochastic geometry and estimation theory, we theoretically analyze the accuracy of the two velocity estimation methods through Cramer-Rao lower bounds (CRLBs).With the dense deployment of small cells, energy efficiency becomes crucial for the sustained operation of wireless networks. In this research, we jointly study the energy efficiency and the spectral efficiency in a two-tier HetNet. We optimize the parameters of inter-cell interference coordination technique and study the trade-offs between the energy efficiency and spectral efficiency of the HetNet.vi

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USRP-based indoor channel sounding for D2D and multi-hop communications

Cited by 18 publications

References 7 publications

UWB Channel Sounding and Modeling for UAV Air-to-Ground Propagation Channels

UWB Channel Sounding and Modeling for UAV Air-to-Ground Propagation Channels

Development of Directionalchannel Sounder Using Usrpand Gnu Radio

Stochastic Geometry Based Analysis of Capacity, Mobility and Energy Efficiency for Dense Heterogeneous Networks

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