Chiranjib Saha

Chiranjib Saha

3GPP Standards Engineer at Qualcomm | PhD in Wireless Communication

Posts by Tags

5G

Integrated access and backhaul (IAB) in 5G

less than 1 minute read

Published:

In our latest paper, we have provided a comprehensive analysis of IAB (as well as orthogonal access and backhaul, OAB) in mm-wave 5G networks. Our results concretely demonstrate that the gains from densification of small cells in an IAB setting quickly saturate because of the bottleneck on the rate of wireless backhaul links. In addition, load balancing does not provide significant gains in this setting since the anchor macro cells will ultimately have to serve all the users in their coverage either through access links or via backhaul links to small cells regardless of how many of them were offloaded to small cells.

Acknowledgements

GrassmannManifold

Learning on a Grassmann Manifold

less than 1 minute read

Published:

In our latest paper, we have shown that the classical problem of beamforming codebook design in limited feedback MIMO systems is equivalent to finding K centroids of the projections of the channel realizations on a Grassmann manifold, which can be solved using an unsupervised learning technique, such as K-means clustering.

IAB

Integrated access and backhaul (IAB) in 5G

less than 1 minute read

Published:

In our latest paper, we have provided a comprehensive analysis of IAB (as well as orthogonal access and backhaul, OAB) in mm-wave 5G networks. Our results concretely demonstrate that the gains from densification of small cells in an IAB setting quickly saturate because of the bottleneck on the rate of wireless backhaul links. In addition, load balancing does not provide significant gains in this setting since the anchor macro cells will ultimately have to serve all the users in their coverage either through access links or via backhaul links to small cells regardless of how many of them were offloaded to small cells.

MIMO

Learning on a Grassmann Manifold

less than 1 minute read

Published:

In our latest paper, we have shown that the classical problem of beamforming codebook design in limited feedback MIMO systems is equivalent to finding K centroids of the projections of the channel realizations on a Grassmann manifold, which can be solved using an unsupervised learning technique, such as K-means clustering.

MachineLearning

Learning on a Grassmann Manifold

less than 1 minute read

Published:

In our latest paper, we have shown that the classical problem of beamforming codebook design in limited feedback MIMO systems is equivalent to finding K centroids of the projections of the channel realizations on a Grassmann manifold, which can be solved using an unsupervised learning technique, such as K-means clustering.

PhDThesis

StchasticGeometry

Integrated access and backhaul (IAB) in 5G

less than 1 minute read

Published:

In our latest paper, we have provided a comprehensive analysis of IAB (as well as orthogonal access and backhaul, OAB) in mm-wave 5G networks. Our results concretely demonstrate that the gains from densification of small cells in an IAB setting quickly saturate because of the bottleneck on the rate of wireless backhaul links. In addition, load balancing does not provide significant gains in this setting since the anchor macro cells will ultimately have to serve all the users in their coverage either through access links or via backhaul links to small cells regardless of how many of them were offloaded to small cells.

mmwave

Integrated access and backhaul (IAB) in 5G

less than 1 minute read

Published:

In our latest paper, we have provided a comprehensive analysis of IAB (as well as orthogonal access and backhaul, OAB) in mm-wave 5G networks. Our results concretely demonstrate that the gains from densification of small cells in an IAB setting quickly saturate because of the bottleneck on the rate of wireless backhaul links. In addition, load balancing does not provide significant gains in this setting since the anchor macro cells will ultimately have to serve all the users in their coverage either through access links or via backhaul links to small cells regardless of how many of them were offloaded to small cells.