  The next generation of wireless communication is expected to harness the
potential of the sub-THz bands to achieve exceptional performance and
ubiquitous connectivity. However, network simulators such as ns-3 currently
lack support for channel models above 100 GHz. This limits the ability of
researchers to study, design, and evaluate systems operating above 100 GHz.
Here, we use the drop-based NYUSIM channel model to simulate channels above 100
GHz in all 3GPP scenarios including urban microcell (UMi), urban macrocell
(UMa), rural macrocell (RMa), indoor hotspot (InH), and indoor factory (InF).
We evaluate the full stack downlink end-to-end performance (throughput,
latency, and packet drop) experienced by a single user equipment (UE) connected
to a Next Generation Node B (gNB) operating in the sub-THz bands for three
gNB--UE antenna configurations: 8x8--4x4, 16x16--4x4, and 64x64--8x8 by using
the NYUSIM channel model at 140 GHz in the ns-3 mmWave module. Our simulations
demonstrate that sub-THz bands can enable high-fidelity applications that
require data rates exceeding 1 Gbps and latency below 15 milliseconds (ms)
using the current mmWave protocol stack, and large antenna arrays. In addition,
we show the variation in throughput vs number of realizations and find the
optimal number of realizations required to obtain statistically significant
results. We strongly encourage researchers worldwide to adopt a similar
approach, as it enables the readers to assess the accuracy and reliability of
the reported results and enhance the findings' overall interpretability.
