3D-FDTD simulation results included in the manuscript "End-fire Optical Phased Array Designs with Multimode Interference Structures on InP, SiN and Polymer Platforms"


Some 6G use cases include augmented reality and high-fidelity holograms, with this information flowing through the network. Hence, it is expected that 6G systems can feed machine learning algorithms with such context information to optimize communication performance. This paper focuses on the simulation of 6G MIMO systems that rely on a 3-D representation of the environment as captured by cameras and eventually other sensors. We present new and improved Raymobtime datasets, which consist of paired MIMO channels and multimodal data.


LATIC is focusing on non-native Mandarin Chinese learners. It is an annotated non-native speech database for Chinese, which is fully open-source can get online for any purpose use. The related using area can be automatic speech scoring, evaluation, derivation—L2 teaching, Education of Chinese as Foreign Language, etc. We are aiming to provide a relatively small-scale and highly efficient training deviation dataset. For this target, four chosen non-native Chinese speaker participated in this project, and their mother tongue (L1s) varies from Russian, Korean, French and Arabic.




As we know, since 1997, although the non-native speaker corpus has made a promising breakthrough from the durations' length and the diversities of the non-native speakers for the Mandarin speech scoring task. But the primary target language still focused more on English. After Chen et al. (2015) released the iCall corpus, the non-native Chinese speech corpus's shortage got relieved, but the open source dataset still has not appeared. Still, there is no total opensource (as far as the best we know). And this will be a big burden for new-learners or researchers to do the further research. In the future, we have a strong belief that the open resource datasets target for non-native Chinese speakers will grow significantly after LATIC released.


 Description of LATIC

Here is the description of our validation corpus; we will introduce it from these two parts: speaker's statistics and annotation.

Speaker's statistics: first, to initialize, the default output pinyin representation size is 1424, that is, 1423 pinyin + 1 blank block. We have defined a total of 1423 pinyin in dict.txt.

Currently, there are 4 participants in our dataset, which includes two males and two females, and their age varies from 19 to 30. The average age is about 24. Our dataset contains 4 hours of speech files, 2,579 audio samples, and the average length is about 9-10secs. 

Annotation: we set three script notations from three levels add to each waveform file. Two Chinese major students play the role as protocols, who are very proficient in the Chinese L2 language, and Mandarin Chinese is their native tongue. After listening to the recording for each file, they recorded the "closest" transcript followed by the modern Mandarin annotations.


The presented data contain recordings of underwater acoustic transmissions collected from a field experiment whose goal was to characterize self-interference for in-band full-duplex underwater acoustic communications. The experiment was conducted in the Lake of Tuscaloosa in July 2019. A single transmission-receiving line was deployed off a boat that was moored in the center of the lake. The transmission-receiving line had one acoustic transmitter and eight hydrophone receivers.


1) User Guide for In-Band Full-Duplex Underwater Acoustic Communication Measurements Self-interference.pdf

2) readme_BPSK.txt

3) readme_OFDM.txt


The channel path data (signal strength, delay, angle of departure and angle of arrival, etc. of each path for each Tx-Rx pair) calculated by a ray-tracing model in an industrial warehouse, via Wireless InSite

For more details, please download the scripts and .zip to access the instructions and the data files that contain the path information.


This data is related to the submitted paper "Optimal Power Allocation in Poisson Shot-Noise-Limited M-ary PPM Photon-Counting NOMA Systems" by Yongkang Chen, Xiaolin Zhou, Haitao Zhou, Dailing Shen, Chongbin Xu, Xin Wang, and Lajos Hanzo. We formulate the power allocation optimization problem of nonlinear discrete-time Poisson (DTP) multiple-access channels (MAC), which is easier than reconfiguring the modulation mode or the duty cycle of signaling.


Supplementary Data for "Beam and Bandwidth Design of Conformal Dielectric Resonator Antenna Employing SIE-Based Substructure Characteristic Mode Analysis"


Communication of selected devices captured on LAN. The communication is stored in pcapng format. Files captures device's communication such as: connection to a network, configuration and other activities specific to each device.

Selected devices are:



- NETATMO smart radiators valves

- BML smart IP camera


Extensive experimental measurement campaigns of more than 30,000 data points of end-to-end latency measurements for the following network architecture schemes is available:

  • Unlicensed IoT (standalone LoRa)
  • Cellular IoT (standalone LTE-M)
  • Concatenated IoT (LoRa interfaced with LTE-M)

Download Data.zip to access all relevant files for the open data measurements.

Related Paper:


  Physical layer secret key generation is a promising candidate to achieve one-time-pad encryption approach for the wireless communication system. However, in a static environment, the secret key rate is low due to the lack of channel time-variation. To solve this problem, this paper proposes a novel secret key generation scheme assisted by an intelligent reflecting surface with discrete phase shifts. In the scheme, legitimate nodes construct the dynamic time-varying channel by rapidly and randomly switching the phase of IRS elements.