**Context** This dataset was recorded as part of an investigation into WLAN indoor ranging for evaluation of time of arrival estimation algorithms. It is a dataset of WLAN ranging signals (IEEE 802.11g/n) recorded in an indoor environment for the purposes of time of arrival (TOA) estimation. The dataset contains signals captured in four experimental configurations, with two different clocking techniques, at ranges from 0.5 m to 25 m, and using two different symbols - the 802.11 standard long training sequence (LTS) and an impulsive symbol. It is expected that the dataset will facilitate development and benchmarking of improved algorithms for time of arrival (TOA) estimation in WLAN systems. Content The released dataset is saved on a folder called DATASET which contains a four separate folders corresponding to each scenario; in addition, another folder contains the transmitted symbols. In each folder SYNC_ALL contains the measurements obtained when sharing both the RF and sampling clocks while SYNC_SA contains the measurements obtained when sharing sampling clocks only. In each folder there are two sub-folders. One for the LTS symbols and one for the impulsive symbols. This hierarchy is depicted in [Figure 1][1] . [Table I][2] provides examples of the file name format and the corresponding cable length . This naming method is followed for all cables scenarios. For the wireless scenarios, the first file (indexed 001) contains the measured data at the first point (i.e. the receiver is 2.4 m away from the transmitter) and then the index increases by one as the distance increases by 1.2 m. In the NLOS scenario, the measurements at the first point were obtained in a LOS environment for calibration. Each file is saved as MATLAB formatted data (.mat) and contains one variable called Received which contains a 300x30000 matrix, where every row is a received block. More information about this Dataset could be found in [WLAN Indoor Ranging Dataset for Evaluation of Time of Arrival Estimation Algorithms](http://hdl.handle.net/10197/10558) CITATION REQUEST Please cite the following paper in any publications reporting on use of this dataset: A. Makki, A. Siddig, and C. J. Bleakley, “Robust high resolution time of arrival estimation for indoor wlan ranging,” IEEE Transactions on Instrumentation and Measurement, vol. 66, no. 10, pp. 2703–2710, 2017. [1]: https://drive.google.com/open?id=1pr_tECUuYj-LMbyPnpEuhGnrd1WmkQfk [2]: https://drive.google.com/open?id=1fGj3-lrX2vsHq2cIaCB2C1tlLwKz88GU