Communications

To test the reciprocity of V2X channel, bidirectional channel state information (CSI) measurement is conducted between Alice (RSU) and Bob (OBU) through PSSCH signal. We utilized two USRP X310 SDR platforms equipped with the CBX daughter board as Alice and Bob. Despite the designed fast USRP transceiver switching, there is a signal transmission delay of approximately 0.3 ms, resulting in a gap of about 4 to 5 symbols in the PSSCH subframe actually received by Alice and Bob.

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This dataset provides valuable insights into Received Signal Reference Power (RSRP) measurements collected by User Equipment (UE) devices strategically positioned within a moving train, featuring the hexagonal frequency selective pattern on its windows. Additionally, it includes RSRP values obtained from an external reference source using the rooftop train antenna.

All the data in this dataset corresponds to the research conducted in our work titled  "Enhancing Mobile Communication on Railways: Impact of Train Window Size and Coating". 

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131 Views

This archive includes three popular traffic datasets: Abilene, GEANT, and TaxiBJ. 

Abilene and GEANT is network traffic datsets and TaxiBJ is urban traffic datset.

 

This archive includes three popular traffic datasets: Abilene, GEANT, and TaxiBJ. 

Abilene and GEANT is network traffic datsets and TaxiBJ is urban traffic datset.

 

This archive includes three popular traffic datasets: Abilene, GEANT, and TaxiBJ. 

Abilene and GEANT is network traffic datsets and TaxiBJ is urban traffic datset.

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160 Views

The data was built in order to evaluate behavior of the Word Error Rate (WER) of the adversaries' and victims' Error Correcting Codes for different symbol error probability (channel errors) is affected by different code parameters for the adversaries' Error Correcting Code.

For the non-binary communication channel with a GRS based covert channel WER of the victims' Error Correcting Code are shifted to the right as the minimal distance of the adversaries' Error Correcting Codes decrease.

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The presented DataSet is dedicated to a W-band (92-96 GHz) focal plane array (FPA) for 50 dBi-reflector antennas intended for the next-generation point-to-point communication links with antenna mast sway compensation. The FPA comprises seven metal waveguide elements arranged in a hexagonal lattice, ensuring the cross-over level of the corresponding reflector beams above -6 dB.

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126 Views

In ultra-wideband optical transmission covering S, C, and L bands, the inter-channel stimulated Raman scattering (ISRS) leads to additional power loss in the S band. This loss can be compensated by either lumped amplifiers (Thulium-doped fibre amplifiers) or distributed Raman amplification (DRA).

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51 Views

The atmospheric radio propagation data set includes atmospheric environment data and radio frequency propagation phase detection data. Atmospheric environment data is collected by temperature, humidity and pressure sensors with a sampling rate of 1. The test time lasts for 10,000 seconds. RF propagation phase jitter was measured by the phase comparison method using a digital multimeter (Keysight 34411A) with a sampling rate of 1. The measurement time is 40,000 seconds.

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65 Views

Existing end-to-end congestion control algorithms, in Transmission Control Protocol (TCP), use packet loss and queueing delay for congestion detection, and use static control laws to adjust the sending rate and to control the congestion. This approach presupposes that the network, and its interaction with the congestion control mechanism, is static or quasi-static. In practice, the state of the network continuously changes over time, resulting in suboptimal performance of existing algorithms.

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The fifth generation (5G) wireless communications system offers faster data rates, lower latency, and higher number of interconnecting devices. Various 5G channel models were developed to study its stochastic characteristics prior to its implementation. These channel models generate multipath components that are grouped into clusters when they have similar properties in delay and angles. The multipaths and multipath clusters are used as datasets in multipath clustering which is used to examine the propagation properties of the 5G system. However, datasets are prone to outliers.

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100 Views

Current neural network solutions for channel estimation are frequently tested by training and testing on one example channel or similar channels. However, data-driven algorithms often degrade significantly on other channels which they are not trained on, because they cannot extrapolate their training knowledge. Online training can fine-tune the offline-trained neural networks to compensate for this degradation, but its feasibility is challenged by the tremendous computational resources required.

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