dichasus-005x Dataset: Indoor Non-Line of Sight, Single Room

Indoor, single-room dataset with co-located receivers and 50MHz bandwidth

Signal Bandwidth

OFDM Subcarriers

Data Points

Total Duration

32

Number of Antennas

Indoor

Type of Environment

1.272000 GHz

Carrier Frequency

Antenna Setup

Position-Tagged

Antenna Configuration

Antenna 1: Main Array

This array has a vertical spacing of 0.118m and a horizontal spacing of 0.118m. In the dataset's cartesian coordinate system, its center is located at [0 0 1.2] and the antenna points in direction [-1 0 0].
Antenna Channel Assignments
 28 5 10 14 6 2 16 18 19 4 23 17 20 11 9 27 31 29 0 13 1 12 3 7 30 26 21 25 22 15 24 8

Python: Import with TensorFlow

#!/usr/bin/env python3
import tensorflow as tf

raw_dataset = tf.data.TFRecordDataset(["tfrecords/dichasus-0053.tfrecords", "tfrecords/dichasus-0054.tfrecords", "tfrecords/dichasus-0055.tfrecords", "tfrecords/dichasus-0056.tfrecords", "tfrecords/dichasus-0057.tfrecords"])

feature_description = {
"csi": tf.io.FixedLenFeature([], tf.string, default_value = ''),
"pos-lidar": tf.io.FixedLenFeature([], tf.string, default_value = ''),
"rot": tf.io.FixedLenFeature([], tf.float32, default_value = 0),
"snr": tf.io.FixedLenFeature([], tf.string, default_value = ''),
"time": tf.io.FixedLenFeature([], tf.float32, default_value = 0),
}

def record_parse_function(proto):
record = tf.io.parse_single_example(proto, feature_description)

# Channel coefficients for all antennas, over all subcarriers, real and imaginary parts
csi = tf.ensure_shape(tf.io.parse_tensor(record["csi"], out_type = tf.float32), (32, 1024, 2))

# Position of transmitter determined by vacuum robot LIDAR, in meters (X / Y coordinates)
pos_lidar = tf.ensure_shape(tf.io.parse_tensor(record["pos-lidar"], out_type = tf.float64), (2))

# Rotation of robot relative to its initial parking position, in radians
rot = tf.ensure_shape(record["rot"], ())

# Signal-to-Noise ratio estimates for all antennas
snr = tf.ensure_shape(tf.io.parse_tensor(record["snr"], out_type = tf.float32), (32))

# Timestamp since start of measurement campaign, in seconds
time = tf.ensure_shape(record["time"], ())

return csi, pos_lidar, rot, snr, time

dataset = raw_dataset.map(record_parse_function, num_parallel_calls = tf.data.experimental.AUTOTUNE)

# Optional: Cache dataset in RAM for faster training
dataset = dataset.cache()

Reference Channel Compensation

For this dataset, we are able to provide estimated antenna-specific carrier phase and sampling time offsets. These offsets occur due to the fact that the reference transmitter channel is not perfectly frequency-flat. To learn more about why these offsets occur and about their compensation, visit our offset calibration tutorial on this topic. Note that the estimates provided here are "best-effort" calculations. The phase and time offsets between antennas in the same array are usually very accurate, but for antennas that are spaced far apart, the results may be less precise. The offset are constant over the complete dataset.

How to Cite

Please refer to the home page for information on how to cite any of our datasets in your research. For this dataset in particular, you may use the following BibTeX:

@data{dataset-dichasus-005x,
author    = {Florian Euchner and Marc Gauger},
publisher = {DaRUS},
title     = {{CSI Dataset dichasus-005x: Indoor Non-Line of Sight, Single Room}},
doi       = {doi:10.18419/darus-2204},
url       = {https://doi.org/doi:10.18419/darus-2204},
year      = {2021}
}

This dataset consists of 5 files. Descriptions of these files as well as download links are provided below.

dichasus-0053
Textual Description

First complete run of vacuum robot

1.5 GB

File Size

5698

Points

1105.8 s

Duration

dichasus-0054
Textual Description

Second complete run of vacuum robot

1.4 GB

File Size

5180

Points

1037.5 s

Duration

dichasus-0055
Textual Description

Third complete run of vacuum robot

1.3 GB

File Size

5062

Points

954.1 s

Duration

dichasus-0056
Textual Description

Fourth complete run of vacuum robot

1.4 GB

File Size

5220

Points

975.2 s

Duration

dichasus-0057
Textual Description

Fifth complete run of vacuum robot

1.3 GB

File Size

5001

Points

920.0 s

Duration