P. Raviteja
YOU?
Author Swipe
View article: Low Complexity Precoding and Detection in Multi-User Massive MIMO OTFS Downlink
Low Complexity Precoding and Detection in Multi-User Massive MIMO OTFS Downlink Open
We consider the problem of degradation in performance of multi-carrier multi-user massive MIMO systems when channel induced Doppler spread is high. Recently, Orthogonal Time Frequency Space (OTFS) modulation has been shown to be robust to …
View article: Orthogonal Time Frequency Space (OTFS) Modulation Based Radar System
Orthogonal Time Frequency Space (OTFS) Modulation Based Radar System Open
Orthogonal time frequency space (OTFS) modulation was proposed to tackle the destructive Doppler effects in wireless communications, with potential applications to many other areas. In this paper, we investigate its application to radar sy…
View article: Physical Layer Techniques for 5G: Waveform Design and Millimeter Waves
Physical Layer Techniques for 5G: Waveform Design and Millimeter Waves Open
In order to achieve the desired goals of the fifth generation (5G) wireless systems, exploring new efficient physical layer techniques is necessary. In this thesis, we work in two areas of 5G, namely, waveform design and millimeter waves. …
View article: Embedded Pilot-Aided Channel Estimation for OTFS in Delay-Doppler Channels
Embedded Pilot-Aided Channel Estimation for OTFS in Delay-Doppler Channels Open
Orthogonal time frequency space (OTFS) modulation was shown to provide significant error performance advantages over orthogonal frequency division multiplexing (OFDM) in delay--Doppler channels. In order to detect OTFS modulated data, the …
View article: Interference Cancellation and Iterative Detection for Orthogonal Time Frequency Space Modulation
Interference Cancellation and Iterative Detection for Orthogonal Time Frequency Space Modulation Open
The recently proposed orthogonal time frequency space (OTFS) modulation technique was shown to provide significant error performance advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. In this paper, we d…
View article: Low-Complexity Iterative Detection for Orthogonal Time Frequency Space Modulation
Low-Complexity Iterative Detection for Orthogonal Time Frequency Space Modulation Open
We elaborate on the recently proposed orthogonal time frequency space (OTFS) modulation technique, which provides significant advantages over orthogonal frequency division multiplexing (OFDM) in Doppler channels. We first derive the input-…
View article: Generalized Spatial Modulation in Large-Scale Multiuser MIMO Systems
Generalized Spatial Modulation in Large-Scale Multiuser MIMO Systems Open
Generalized spatial modulation (GSM) uses $n_t$ transmit antenna elements but\nfewer transmit radio frequency (RF) chains, $n_{rf}$. Spatial modulation (SM)\nand spatial multiplexing are special cases of GSM with $n_{rf}=1$ and\n$n_{rf}=n_…