3.4k citations · 6.5k across the 45 of their papers we have counts for
32 papers · 1 filter
Enhancements for 5G NR PRACH Reception: An AI/ML Approach
Rohit Singh, Anil Kumar Yerrapragada, Jeeva Keshav S +1
Random Access is an important step in enabling the initial attachment of a User Equipment (UE) to a Base Station (gNB). The UE identifies itself by embedding a Preamble Index (RAPI…
Pilotless Uplink for Massive MIMO Systems
P Aswathylakshmi, Radha Krishna Ganti
Massive MIMO OFDM waveforms help support a large number of users in the same time-frequency resource and also provide significant array gain for uplink reception in cellular system…
Fronthaul Compression for Uplink Massive MIMO using Matrix Decomposition
Aswathylakshmi P, Radha Krishna Ganti
Massive MIMO opens up attractive possibilities for next generation wireless systems with its large number of antennas offering spatial diversity and multiplexing gain. However, the…
Interference Characterization in Downlink Li-Fi Optical Attocell Networks
Atchutananda Surampudi, Radha Krishna Ganti
Wireless access to data using visible light, popularly known as light-fidelity (Li-Fi), is one of the key emerging technologies which promises huge bandwidths and data rates. In Li…
Coverage Analysis in Millimeter Wave Cellular Networks with Reflections
Aroon Narayanan, Sreejith T., Radha Krishna Ganti
The coverage probability of a user in a mmwave system depends on the availability of line-of-sight paths or reflected paths from any base station. Many prior works modelled blockag…
Error Vector Magnitude Analysis in Generalized Fading with Co-Channel Interference
Sudharsan Parthasarathy, Suman Kumar, Radha Krishna Ganti +2
In this paper, we derive the data-aided Error Vector Magnitude (EVM) in an interference limited system when both the desired signal and interferers experience independent and non i…
SIR Asymptotics in General Network Models
Anjin Guo, Martin Haenggi, Radha Krishna Ganti
In the performance analyses of wireless networks, asymptotic quantities and properties often pro- vide useful results and insights. The asymptotic analyses become especially import…
Maximal Packing with Interference Constraints
Rakshith Jagannath, Radha Krishna Ganti, Neelesh S Upadhye
In this work, we study the problem of scheduling a maximal set of transmitters subjected to an interference constraint across all the nodes. Given a set of nodes, the problem reduc…
Adaptive Modulation with Impulsive Interference
Sudharsan Parthasarathy, Radha Krishna Ganti
In this letter, we analyze power and rate adaptation in a point-to-point link with Rayleigh fading and impulsive interference. We model the impulsive interference as a Bernoulli-Ga…
Coverage Analysis In Downlink Poisson Cellular Network With - Shadowed Fading
Sudharsan Parthasarathy, Radha Krishna Ganti
The downlink coverage probability of a cellular network, when the base station locations are modelled by a Poisson point process (PPP), is known when the desired channel is Nakagam…
Adaptive CSMA under the SINR Model: Efficient Approximation Algorithms for Throughput and Utility Maximization
Peruru Subrahmanya Swamy, Radha Krishna Ganti, Krishna Jagannathan
We consider a Carrier Sense Multiple Access (CSMA) based scheduling algorithm for a single-hop wireless network under a realistic Signal-to-interference-plus-noise ratio (SINR) mod…
Performance of Cloud Radio Networks
Sreejith T. Veetil, Kiran Kuchi, Radha Krishna Ganti
Cloud radio networks coordinate transmission among base stations (BSs) to reduce the interference effects, particularly for the cell-edge users. In this paper, we analyze the perfo…
Approximation of Capacity for ISI Channels with One-bit Output Quantization
Radha Krishna Ganti, Andrew Thangaraj, Arijit Mondal
Motivated by recent high bandwidth communication systems, Inter-Symbol Interference (ISI) channels with 1-bit quantized output are considered under an average-power-constrained con…
Asymptotics and Approximation of the SIR Distribution in General Cellular Networks
Radha K. Ganti, Martin Haenggi
It has recently been observed that the SIR distributions of a variety of cellular network models and transmission techniques look very similar in shape. As a result, they are well…
Performance of PZF and MMSE Receivers in Cellular Networks with Multi-User Spatial Multiplexing
Sreejith T. Veetil, Kiran Kuchi, Radha Krishna Ganti
This paper characterizes the performance of cellular networks employing multiple antenna open-loop spatial multiplexing techniques. We use a stochastic geometric framework to model…
Modeling Non-Uniform UE Distributions in Downlink Cellular Networks
Harpreet S. Dhillon, Radha Krishna Ganti, Jeffrey G. Andrews
A recent way to model and analyze downlink cellular networks is by using random spatial models. Assuming user equipment (UE) distribution to be uniform, the analysis is performed a…
MIMO Interference Alignment in Random Access Networks
Behrang Nosrat-Makouei, Radha Krishna Ganti, Jeffrey G. Andrews +1
In this paper, we analyze a multiple-input multiple-output (MIMO) interference channel where nodes are randomly distributed on a plane as a spatial Poisson cluster point process. E…
Load-Aware Modeling and Analysis of Heterogeneous Cellular Networks
Harpreet S. Dhillon, Radha Krishna Ganti, Jeffrey G. Andrews
Random spatial models are attractive for modeling heterogeneous cellular networks (HCNs) due to their realism, tractability, and scalability. A major limitation of such models to d…
Analytical Evaluation of Fractional Frequency Reuse for Heterogeneous Cellular Networks
Thomas D. Novlan, Radha Krishna Ganti, Arunabha Ghosh +1
Interference management techniques are critical to the performance of heterogeneous cellular networks, which will have dense and overlapping coverage areas, and experience high lev…
Modeling and Analysis of K-Tier Downlink Heterogeneous Cellular Networks
Harpreet S. Dhillon, Radha Krishna Ganti, Francois Baccelli +1
Cellular networks are in a major transition from a carefully planned set of large tower-mounted base-stations (BSs) to an irregular deployment of heterogeneous infrastructure eleme…
Analytical Evaluation of Fractional Frequency Reuse for OFDMA Cellular Networks
Thomas David Novlan, Radha Krishna Ganti, Arunabha Ghosh +1
Fractional frequency reuse (FFR) is an interference management technique well-suited to OFDMA-based cellular networks wherein the cells are partitioned into spatial regions with di…
Series Expansion for Interference in Wireless Networks
Radha Krishna Ganti, Francois Baccelli, Jeffrey G. Andrews
The spatial correlations in transmitter node locations introduced by common multiple access protocols makes the analysis of interference, outage, and other related metrics in a wir…
On the Throughput Cost of Physical Layer Security in Decentralized Wireless Networks
Xiangyun Zhou, Radha Krishna Ganti, Jeffrey G. Andrews +1
This paper studies the throughput of large-scale decentralized wireless networks with physical layer security constraints. In particular, we are interested in the question of how m…
High-SIR Transmission Capacity of Wireless Networks with General Fading and Node Distribution
Radha Krishna Ganti, Jeffrey G. Andrews, Martin Haenggi
In many wireless systems, interference is the main performance-limiting factor, and is primarily dictated by the locations of concurrent transmitters. In many earlier works, the lo…