add nrPDSCHMCSTables() and bump version to 0.5.1

py3gpp/__init__.py

@@ -41,6 +41,7 @@
 from .nrPDSCHDecode import nrPDSCHDecode
 from .nrDLSCHInfo import nrDLSCHInfo
 from .nrPDSCHIndices import nrPDSCHIndices
+from .nrPDSCHMCSTables import nrPDSCHMCSTables
 
 from .configs.nrCarrierConfig import nrCarrierConfig
 from .configs.nrNumerologyConfig import nrNumerologyConfig

py3gpp/nrPDSCHMCSTables.py

@@ -0,0 +1,44 @@
+import numpy as np
+
+def qm_to_mod(qm):
+    if qm == 1:
+        return 'BPSK'
+    if qm == 2:
+        return 'QPSK'
+    if qm == 4:
+        return '16QAM'
+    if qm == 6:
+        return '64QAM'
+    assert False, f'modulation order = {qm} is not supported'
+    return 0
+
+class qam16_table():
+    def __init__(self):
+        self._table = np.zeros((4, 29), int)
+        self._table[0,:] = np.arange(self._table.shape[1])
+        self._table[1,:] = np.array(  [2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  4,  4,  4,  4,  4,  4,  4,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6])
+        self._table[2,:] = np.array([120,157,193,251,308,379,449,526,602,679,340,378,434,490,553,616,658,438,466,517,567,616,666,719,772,822,873,910,948])
+
+    def Qm(self, mcs):
+        return self._table[1,mcs]
+
+    def Modulation(self, mcs):
+        return qm_to_mod(self._table[1,mcs])
+
+    def Rate(self, mcs):
+        return self._table[2,mcs] / 1024
+
+
+class pdsch_mcs_table_class():
+    def __init__(self):
+        self.QAM64Table = qam16_table()
+
+def nrPDSCHMCSTables():
+    return pdsch_mcs_table_class()
+
+if __name__ == '__main__':
+    table = nrPDSCHMCSTables().QAM64Table
+    mcs = 0
+    print(f'mcs = {mcs}, modulation = {table.Modulation(mcs)}, rate = {table.Rate(mcs)}')
+    mcs = 16
+    print(f'mcs = {mcs}, modulation = {table.Modulation(mcs)}, rate = {table.Rate(mcs)}')

pyproject.toml

@@ -9,7 +9,7 @@ build-backend = "setuptools.build_meta"
 py3gpp = ["codes/*.csv"]
 
 [project]
-version = "0.5.0"
+version = "0.5.1"
 authors = [
     {name = "Benjamin Menküc", email = "benjamin@menkuec.de"},
 ]

tests/test_nrPDSCHMCSTables.py

@@ -0,0 +1,23 @@
+import numpy as np
+
+from py3gpp.nrPDSCHMCSTables import nrPDSCHMCSTables
+
+def test_nrPDSCHMCSTables():
+    table = nrPDSCHMCSTables().QAM64Table
+    mcs = 0
+    assert table.Modulation(mcs) == 'QPSK'
+    assert table.Qm(mcs) == 2
+    assert table.Rate(mcs) == 120 / 1024
+
+    mcs = 15
+    assert table.Modulation(mcs) == '16QAM'
+    assert table.Qm(mcs) == 4
+    assert table.Rate(mcs) == 616 / 1024
+
+    mcs = 16
+    assert table.Modulation(mcs) == '16QAM'
+    assert table.Qm(mcs) == 4
+    assert table.Rate(mcs) == 658 / 1024
+
+if __name__ == '__main__':
+    test_nrPDSCHMCSTables()