使用Rhode和Schwartz的ZVB14矢量网络分析仪（VNA）对无线信道的散射参数S21进行频域测量。测量系统由VNA、低损耗射频电缆以及发射机和接收机端的全向天线组成。发射机和接收机的高度固定在1.5米。为VNA编写了一个程序脚本，用于测量10次连续扫描：每次扫描包含601个频率采样点，间隔为0.167 MHz，覆盖以2.4 GHz为中心的100 MHz频带。这些设置提供了10纳秒（带宽的倒数）的高时域分辨率和（0.167MHz）=5.99秒的时间跨度。这些测量旨在检查WiFi频段，特别是IEEE 802.11标准中的通道1、6和11。
频域信道测量在阿联酋沙迦的哈利法大学校园进行。在4个不同的位置进行测量：
1-Lab139（高度杂乱）
2-走廊_rm155（中等杂乱）[一面墙，另一面窗户]另一边]。
3-主休息室（低杂波）
4-体育馆（开放空间）。

Attribute Information:

This dataset have 5 attributes:
1- Frequency
2- Real part of S11 parameter
3- Imaginary part of S11 parameter
4- Real part of S21 parameter
5- Imaginary part of S21 parameter

Relevant Papers:

Salahat, Ehab, Ahmed Kulaib, Nazar Ali, and Raed Shubair. 'Investigation of wireless channel asymmetry in indoor environments.' arXiv preprint [Web link] (2017).
AlHajri, Mohamed Ibrahim, Nazar T. Ali, and Raed M. Shubair. 'Classification of Indoor Environments for IoT Applications: A Machine Learning Approach.' IEEE Antennas and Wireless Propagation Letters (2018).
Salahat, Ehab, Ahmed Kulaib, Nazar Ali, and Raed Shubair. 'Exploring symmetry in wireless propagation channels.' In Networks and Communications (EuCNC), 2017 European Conference on, pp. 1-6. IEEE, 2017.
Sattarian, Mahbubeh, Javad Rezazadeh, Reza Farahbakhsh, and Alireza Bagheri. 'Indoor navigation systems based on data mining techniques in internet of things: a survey.' Wireless Networks (2018): 1-18.

Citation Request:

If you will use this dataset please cite the following document:
1- First paper
@inproceedings{alhajri2016classification,
 title={Classification of indoor environments based on spatial correlation of rf channel fingerprints},
 author={Alhajri, MI and Alsindi, N and Ali, NT and Shubair, RM},
 booktitle={Antennas and Propagation (APSURSI), 2016 IEEE International Symposium on},
 pages={1447--1448},
 year={2016},
}
2- Second paper
@article{alhajri2018classification,
 title={Classification of Indoor Environments for IoT Applications: A Machine Learning Approach},
 author={AlHajri, Mohamed Ibrahim and Ali, Nazar T and Shubair, Raed M},
 journal={IEEE Antennas and Wireless Propagation Letters},
 year={2018},
 publisher={IEEE}
}