Dataset Viewer
The dataset viewer is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code: StreamingRowsError
Exception: CastError
Message: Couldn't cast
capture_utc: string
nominal_label_seconds: int64
actual_duration_seconds: int64
format: struct<datatype: string, component_datatype: string, endianness: string, bytes_per_complex_sample: i (... 65 chars omitted)
child 0, datatype: string
child 1, component_datatype: string
child 2, endianness: string
child 3, bytes_per_complex_sample: int64
child 4, layout: string
child 5, downlink_file: string
child 6, uplink_file: string
radio: struct<device_family: string, downlink_center_frequency_hz: int64, uplink_center_frequency_hz: int64 (... 106 chars omitted)
child 0, device_family: string
child 1, downlink_center_frequency_hz: int64
child 2, uplink_center_frequency_hz: int64
child 3, sample_rate_hz: int64
child 4, requested_rf_bandwidth_hz: int64
child 5, downlink_gain_db: int64
child 6, uplink_gain_db: int64
samples_per_channel: int64
integrity: struct<equal_sample_counts: bool, hardware_timed_common_start: bool, reported_overflow_count: int64, (... 21 chars omitted)
child 0, equal_sample_counts: bool
child 1, hardware_timed_common_start: bool
child 2, reported_overflow_count: int64
child 3, overflow_free: bool
capture_type: string
lte_reference: struct<pci: int64, bandwidth_prb: int64, duplex: string, uplink_rnti: int64, crc_valid_pusch_transpo (... 61 chars omitted)
child 0, pci: int64
child 1, bandwidth_prb: int64
child 2, duplex: string
child 3, uplink_rnti: int64
child 4, crc_valid_pusch_transport_blocks: int64
child 5, contains_controlled_attach_procedure: bool
to
{'capture_utc': Value('string'), 'capture_type': Value('string'), 'actual_duration_seconds': Value('int64'), 'format': {'datatype': Value('string'), 'component_datatype': Value('string'), 'endianness': Value('string'), 'bytes_per_complex_sample': Value('int64'), 'layout': Value('string'), 'downlink_file': Value('string'), 'uplink_file': Value('string')}, 'radio': {'device_family': Value('string'), 'downlink_center_frequency_hz': Value('int64'), 'uplink_center_frequency_hz': Value('int64'), 'sample_rate_hz': Value('int64'), 'requested_rf_bandwidth_hz': Value('int64'), 'downlink_gain_db': Value('int64'), 'uplink_gain_db': Value('float64')}, 'samples_per_channel': Value('int64'), 'lte_reference': {'pci': Value('int64'), 'bandwidth_prb': Value('int64'), 'duplex': Value('string'), 'uplink_rnti': Value('int64'), 'crc_valid_pusch_transport_blocks': Value('int64'), 'contains_controlled_attach_procedure': Value('bool')}, 'integrity': {'equal_sample_counts': Value('bool'), 'hardware_timed_common_start': Value('bool'), 'reported_overflow_count': Value('int64'), 'overflow_free': Value('bool')}}
because column names don't match
Traceback: Traceback (most recent call last):
File "/src/services/worker/src/worker/utils.py", line 149, in get_rows_or_raise
return get_rows(
dataset=dataset,
...<4 lines>...
column_names=column_names,
)
File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
return func(*args, **kwargs)
File "/src/services/worker/src/worker/utils.py", line 129, in get_rows
rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
File "/src/services/worker/src/worker/utils.py", line 489, in safe_iter
yield from ds.decode(False) if ds.features else ds
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2818, in __iter__
for key, example in ex_iterable:
^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
for key, pa_table in self._iter_arrow():
~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, in _iter_arrow
for key, pa_table in self.ex_iterable._iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
for key, pa_table in iterator:
^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
for key, pa_table in self.generate_tables_fn(**gen_kwags):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
self._cast_table(pa_table, json_field_paths=json_field_paths),
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
pa_table = table_cast(pa_table, self.info.features.arrow_schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
capture_utc: string
nominal_label_seconds: int64
actual_duration_seconds: int64
format: struct<datatype: string, component_datatype: string, endianness: string, bytes_per_complex_sample: i (... 65 chars omitted)
child 0, datatype: string
child 1, component_datatype: string
child 2, endianness: string
child 3, bytes_per_complex_sample: int64
child 4, layout: string
child 5, downlink_file: string
child 6, uplink_file: string
radio: struct<device_family: string, downlink_center_frequency_hz: int64, uplink_center_frequency_hz: int64 (... 106 chars omitted)
child 0, device_family: string
child 1, downlink_center_frequency_hz: int64
child 2, uplink_center_frequency_hz: int64
child 3, sample_rate_hz: int64
child 4, requested_rf_bandwidth_hz: int64
child 5, downlink_gain_db: int64
child 6, uplink_gain_db: int64
samples_per_channel: int64
integrity: struct<equal_sample_counts: bool, hardware_timed_common_start: bool, reported_overflow_count: int64, (... 21 chars omitted)
child 0, equal_sample_counts: bool
child 1, hardware_timed_common_start: bool
child 2, reported_overflow_count: int64
child 3, overflow_free: bool
capture_type: string
lte_reference: struct<pci: int64, bandwidth_prb: int64, duplex: string, uplink_rnti: int64, crc_valid_pusch_transpo (... 61 chars omitted)
child 0, pci: int64
child 1, bandwidth_prb: int64
child 2, duplex: string
child 3, uplink_rnti: int64
child 4, crc_valid_pusch_transport_blocks: int64
child 5, contains_controlled_attach_procedure: bool
to
{'capture_utc': Value('string'), 'capture_type': Value('string'), 'actual_duration_seconds': Value('int64'), 'format': {'datatype': Value('string'), 'component_datatype': Value('string'), 'endianness': Value('string'), 'bytes_per_complex_sample': Value('int64'), 'layout': Value('string'), 'downlink_file': Value('string'), 'uplink_file': Value('string')}, 'radio': {'device_family': Value('string'), 'downlink_center_frequency_hz': Value('int64'), 'uplink_center_frequency_hz': Value('int64'), 'sample_rate_hz': Value('int64'), 'requested_rf_bandwidth_hz': Value('int64'), 'downlink_gain_db': Value('int64'), 'uplink_gain_db': Value('float64')}, 'samples_per_channel': Value('int64'), 'lte_reference': {'pci': Value('int64'), 'bandwidth_prb': Value('int64'), 'duplex': Value('string'), 'uplink_rnti': Value('int64'), 'crc_valid_pusch_transport_blocks': Value('int64'), 'contains_controlled_attach_procedure': Value('bool')}, 'integrity': {'equal_sample_counts': Value('bool'), 'hardware_timed_common_start': Value('bool'), 'reported_overflow_count': Value('int64'), 'overflow_free': Value('bool')}}
because column names don't matchNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
Starlink D2C and Lab LTE X300 Duplex IQ Captures
Three sample-aligned duplex LTE IQ recordings captured with a USRP X300 for authorized communications research. Two recordings are field Starlink D2C captures; the third is a controlled lab LTE/fake-eNB capture used as a positive uplink-decoding reference.
Contents
| Capture | Nominal label | Actual samples/channel | Actual duration | Downlink | Uplink |
|---|---|---|---|---|---|
20260729T010909Z_40s |
40 s | 410,000,000 | 41 s | 1992.5 MHz | 1912.5 MHz |
20260729T022327Z_60s |
60 s | 610,000,000 | 61 s | 1992.5 MHz | 1912.5 MHz |
20260728T224724Z_lab_fake_enb_4s |
4 s | 40,000,000 | 4 s | 1992.5 MHz | 1912.5 MHz |
Each capture contains:
downlink.fc32uplink.fc32capture.json
Sample format
- Sampling rate: 10,000,000 complex samples/second
- Datatype: little-endian complex float32
- Byte order per sample:
float32 I, thenfloat32 Q - One complex sample occupies 8 bytes
- DL sample
nand UL samplenwere acquired simultaneously - Hardware-timed common start
- Zero reported receiver overflows
Example NumPy reader:
import numpy as np
iq = np.fromfile("downlink.fc32", dtype="<f4").reshape(-1, 2)
samples = iq[:, 0] + 1j * iq[:, 1]
Important notes
- The directory names retain their original nominal 40 s/60 s labels. The
recorder was commanded for 41 s/61 s, which is reflected in
capture.json. - The lab capture is the
_new.fc32recording from the original local run, renamed to the standarddownlink.fc32/uplink.fc32dataset layout. It contains a controlled UE attach to PCI 1 and is the positive reference on which four PUSCH transport blocks passed CRC. - These files contain raw RF IQ, not validated decoded packets.
- Access and use must comply with applicable authorization, privacy, telecommunications, and spectrum rules.
- No warranty is made that a tentative decoder output corresponds to a valid MAC, RLC, NAS, or user-plane packet unless its relevant integrity checks pass.
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