Agora-wireless / Agora

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Downlink BER is terrible when the UE is put in multichannel mode #348

Open asedlmayr opened 2 years ago

asedlmayr commented 2 years ago

Hardware Configuration (-DUSE_ARGOS=true)

When ue_channels = "AB" the second user reports a ~50% BER.

While using the same number of users in 1 channel mode the BER for both users is acceptable. This is repeatable with dl-powder.json while modifing the ue_channels variable in the json and adding / subtracting a user from the topology (and keeping everything else the same).

All the test showed the same results (Channel B Ber ~45%) Basestation (Channel B) Basestation (Channel A) User (Channel A & B)

UE 0: Downlink bit errors (BER) 1253/352000(0.00355966), block errors (BLER) 8/1000 (0.008) UE 1: Downlink bit errors (BER) 181735/352000(0.516293), block errors (BLER) 1000/1000 (1)