Ratnam V. Raja Kumar

46 papers A 1B 4C 1Misc 2Journal 22Unranked 16
YearRankTypeTitle / Venue / Authors
2021 J jnl
A Distributed MIMO Radar With Joint Optimal Transmit and Receive Signal Combining.
IEEE Trans. Aerosp. Electron. Syst.
Satya Ganesh Dontamsetti, Ratnam V. Raja Kumar
2015 J jnl
A Method for Accessing Spatial Spectrum Holes for Relay Based Cognitive Cellular Networks.
IEEE Wirel. Commun. Lett.
Praful D. Mankar, Goutam Das, Sant Sharan Pathak, Ratnam V. Raja Kumar
2015 J jnl
Performance analysis of flexible reuse in cellular networks.
IET Commun.
Subba Rao Boddu, Suvra Sekhar Das, Ratnam V. Raja Kumar
2014 J jnl
Bandwidth Partitioning and SINR Threshold Analysis of Fractional Frequency Reuse in OFDMA Cellular Networks for Real Time and Best Effort Traffic.
Wirel. Pers. Commun.
Subba Rao Boddu, Atri Mukhopadhyay, Bigi Varghese Philip, Suvra Sekhar Das, Ratnam V. Raja Kumar
2013 J jnl
Data Aided Iterative Channel Estimation in OFDM Systems Using a Controlled Superimposition of Training Sequences.
Wirel. Pers. Commun.
Jinesh P. Nair, Ratnam V. Raja Kumar
2012 — conf
Measurement of power consumption in multimedia mobiles for various network activities in 2G/3G networks.
IEEE ANTS
Pankaj Kumar Gupta, Parul Saraswat, C. S. Kumar, S. Chakrabarti, Ratnam V. Raja Kumar
2011 J jnl
A Wideband RF Frontend Architecture for Software Defined Radio.
Circuits Syst. Signal Process.
Abhinav Kumar Tyagi, Ratnam V. Raja Kumar
2011 J jnl
An Efficient Maximum Likelihood Carrier Frequency Offset Estimator for OFDM Using Null Subcarriers and Cyclic Prefix.
Wirel. Pers. Commun.
S. M. Sameer, Ratnam V. Raja Kumar
2011 — conf
Combined BER Analysis for Time-Frequency Synchronization Schemes for MB-OFDM UWB.
VTC Spring
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2011 — conf
Energy Efficient Timing Synchronizer for MB-OFDM UWB.
VTC Spring
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2011 J jnl
Improved superimposed training-based channel estimation method for closed-loop multiple input multiple output orthogonal frequency division multiplexing systems.
IET Commun.
Jinesh P. Nair, Ratnam V. Raja Kumar
2011 J jnl
Some interesting results on compatible BER analysis issues related to multi-band timing and frequency synchronizers applicable for MB-OFDM based UWB communications.
Digit. Signal Process.
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2010 — conf
A High Level Performance Estimation: Modeling the Effects of Parameters on Performance Properties for a Tool Assisted SDR Development.
ICC
Venkatesh Ramakrishnan, S. Mishra, Gerd Ascheid, Ratnam V. Raja Kumar
2010 J jnl
An Adaptive Timing Synchronization Scheme for Multi-Band Orthogonal Frequency Division Multiplexing Based Ultra-Wideband Communication Systems.
Wirel. Pers. Commun.
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2010 J jnl
Channel Estimation in OFDM Systems Using a Controlled Superimposition of Training Sequences.
Circuits Syst. Signal Process.
Jinesh P. Nair, Ratnam V. Raja Kumar
2010 J jnl
Frequency Offset Estimation by Multi-Band Averaging Method: A New Approach for MB-OFDM Based Ultra-Wideband Communication System.
Wirel. Pers. Commun.
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2010 J jnl
Optimal Superimposed Training Sequences for Channel Estimation in MIMO-OFDM Systems.
EURASIP J. Adv. Signal Process.
Jinesh P. Nair, Ratnam V. Raja Kumar
2009 J jnl
A Technique for Frequency Synchronization in Multi-Band OFDM in Realistic UWB Channel.
Circuits Syst. Signal Process.
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2009 J jnl
A minimum entropy based switched adaptive predictor for lossless compression of images.
Signal Image Video Process.
Anil Kumar Tiwari, Ratnam V. Raja Kumar
2009 J jnl
An efficient technique for the integer frequency offset estimation in OFDM systems.
Signal Process.
S. M. Sameer, Ratnam V. Raja Kumar
2008 — conf
A Low Complexity Null Subcarrier Aided Frequency Offset Estimation Technique for OFDM.
VTC Spring
S. M. Sameer, Ratnam V. Raja Kumar
2008 B conf
A Multi-Band Timing Estimation and Compensation Scheme for Ultra-Wideband Communications.
GLOBECOM
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2008 — conf
A Switched Predictive Coding Method for Lossless Video Coding.
ICVGIP
Anil Kumar Tiwari, Ratnam V. Raja Kumar
2008 — conf
An Efficient Frequency Offset Estimation Scheme for Multi-Band OFDM Ultra-Wideband Systems.
VTC Spring
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2008 — conf
An Efficient Maximum Likelihood CFO Estimation Technique for OFDMA Uplink Transmissions.
ICIIS
S. M. Sameer, Ratnam V. Raja Kumar
2008 B conf
An Efficient Near Blind Carrier Frequency Offset Estimation Scheme for MIMO-OFDM Systems.
GLOBECOM
S. M. Sameer, Ratnam V. Raja Kumar
2008 — conf
An Iterative Channel Estimation Method using Superimposed Training in OFDM Systems.
VTC Fall
Jinesh P. Nair, Ratnam V. Raja Kumar
2008 C conf
An efficient maximum likelihood carrier frequency offset estimation technique for OFDM systems.
ISCC
S. M. Sameer, Ratnam V. Raja Kumar
2008 B conf
An optimal superimposed training sequence for channel estimation in OFDM systems.
PIMRC
Jinesh P. Nair, Ratnam V. Raja Kumar
2008 A conf
Least squares based optimal switched predictors for lossless compression of images.
ICME
Anil Kumar Tiwari, Ratnam V. Raja Kumar
2008 B conf
Mathematical analysis of signal propagation in ultra-wideband transceiver system with frequency offset correction.
PIMRC
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2008 — conf
Symbol timing synchronization for ultra-wideband (UWB) multi-band OFDM (MB-OFDM) systems.
COMSWARE
Debarati Sen, Saswat Chakrabarti, Ratnam V. Raja Kumar
2007 — conf
Least-Squares Based Switched Adaptive Predictors for Lossless Video Coding.
ICIP (6)
Anil Kumar Tiwari, Ratnam V. Raja Kumar
2006 Misc conf
Optimized VLIW Architecture for Non-zero IF QAM-Modem Implementations.
VLSI Design
Alok Kumar Pani, Ratnam V. Raja Kumar
2006 J jnl
Performance analysis of a novel matched filter detector with reduced out-of-band response for narrowband signals.
IEEE Trans. Signal Process.
Ratnam V. Raja Kumar
2005 — conf
A switched adaptive predictor for lossless compression of high resolution images.
ICC
Anil Kumar Tiwari, Ratnam V. Raja Kumar
2005 — conf
Optimal slope bin classification in gradient adjusted predictor for lossless compression of medical images.
ICIP (2)
Anil Kumar Tiwari, Ratnam V. Raja Kumar
2005 — conf
Performance analysis of the UMTS system for Web traffic over dedicated channels.
ITRE
Manju Sarvagya, Ratnam V. Raja Kumar
2003 — conf
Estimation of time-varying AR models of speech through Gauss-Markov modeling.
ICASSP (6)
Krishna M. Malladi, Ratnam V. Raja Kumar
2003 — conf
Recursive estimation of wavelet based time varying AR models of speech.
ICASSP (6)
K. Sreekanth Reddy, Ratnam V. Raja Kumar
2000 J jnl
A near-optimum detector with reduced out-of band response for narrowband signals.
IEEE Trans. Signal Process.
Ratnam V. Raja Kumar
1999 J jnl
An end-connected dual bus topology for metropolitan area networks.
Comput. Networks
M. R. Ramapriya, S. Beotra, Maharaj Mukherjee, Ratnam V. Raja Kumar, P. Dhar
1997 J jnl
Mean convergence behavioural analysis of IIR adaptive filters.
Signal Process.
Ratnam V. Raja Kumar, C. B. Rama Rao
1990 J jnl
Tracking of bandpass signals using center-frequency adaptive filters.
IEEE Trans. Acoust. Speech Signal Process.
Ratnam V. Raja Kumar, Ranendra N. Pal
1985 J jnl
A gradient algorithm for center-frequency adaptive recursive bandpass filters.
Proc. IEEE
Ratnam V. Raja Kumar, Ranendra N. Pal
1984 Misc conf
Separation of sinusoids using the constrained adaptive line enhancer.
ICASSP
Ratnam V. Raja Kumar, Ranendra N. Pal