Sushanth Babu

Jawaharlal Nehru Technological University, Department of Electronics & Communications Engineering, Post-Doc

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Kwantlen Polytechnic University

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Mediterranean University of Reggio Calabria

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Papers by Sushanth Babu

International Journal of Distributed and Parallel systems (IJDPS)

… in Cooperative Cellular Systems, 3 (5), 111- …, 2012

ABSTRACT: We develop an energy-efficient routing protocol in order to enhance the stability perio... more

International Journal of Computer Networks & Communications (IJCNC)

… Allocation in Future Cellular Networks, 4 …, 2012

The International Journal of Computer Networks &amp; Communications (IJCNC) is a bi monthly o... more The International Journal of Computer Networks &amp; Communications (IJCNC) is a bi monthly open access peer-reviewed journal that publishes articles which contribute new results in all areas of Computer Networks &amp; Communications. The journal focuses on all technical and practical aspects of Computer Networks &amp; data Communications. The goal of this journal is to bring together researchers and practitioners from academia and industry to focus on advanced networking concepts and establishing new collaborations in these areas.

Performance Analysis of Distributed Spatial Multiplexing with Multi-hop Amplify and Forward Relaying in Cellular Networks

International Journal of Computer Science, 2012

Signal to Noise Ratio (SNR). The best relay chosen will transmit jointly with source using Amplif... more

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Optimization of Quantization in Higher Order Modulations for LDPC-Coded Systems

waset.org

In this paper, we evaluate the choice of suitable quantization characteristics for both the decod... more In this paper, we evaluate the choice of suitable quantization characteristics for both the decoder messages and the received samples in Low Density Parity Check (LDPC) coded systems using M-QAM (Quadrature Amplitude Modulation) schemes. The analysis involves the demapper block that provides initial likelihood values for the decoder, by relating its quantization strategy of the decoder. A mapping strategy refers to the grouping of bits within a codeword, where each m-bit group is used to select a 2m-ary signal in accordance with the signal labels. Further we evaluate the system with mapping strategies like Consecutive-Bit (CB) and Bit-Reliability (BR). A new demapper version, based on approximate expressions, is also presented to yield a low complexity hardware implementation.

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Companding Technique for Reducing Peak-to-Average Power Ratio in OFDM Linear Coded Systems

interscience.in

Orthogonal Frequency division multiplexing (OFDM) is a very attractive technique in wireless comm... more Orthogonal Frequency division multiplexing (OFDM) is a very attractive technique in wireless communications which provides robustness to channel fading and immunity to impulse interference. Despite of its advantages, one of the major drawbacks of OFDM system is very high peak-to-average power ratio (PAPR). Among the various PAPR reduction techniques, companding appears attractive for its simplicity and effectiveness. In this paper novel Low density parity check (LDPC) encoded new companding technique is proposed which offers improved bit error rate, minimizes out-of-band interference and reduce PAPR effectively. Simulation results illustrates the performance of the system under Additive White Gaussian Noise (AWGN) and further evaluation is done for comparing the proposed companding technique with previous techniques.

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Cross-Layer Energy Optimization in Cooperative Cellular Systems

International Journal

Cooperative networking is currently under standardization for future wireless cellular systems. T... more Cooperative networking is currently under standardization for future wireless cellular systems. This paper considers energy efficient transmission schemes in cooperative cellular transceiver systems. In which, we analyze how to minimize energy consumption per information bit in single link. Further, Target bit error probability, Packet length, Retransmission and Transmission distance for both coded and un coded system are considered as the performance metrics for the optimization of energy. The simulation results illustrate the effect of energy efficient modulation schemes for variable distances and fixed bit error probability. . He a senior member of professional bodies like IEEE [comsoc], ISTE, and IETE. He has published over 78 International articles. He currently serves as Editor for International Journal of Wireless Personal communication, Springer and International Journal of Wireless Networks, Springer. He guided 03 Ph.D scholars and guided 62 Master Projects. His research interests are in the areas of Wireless Communications, Signal Processing Applications and Cooperative Mobile Communications.

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Bioactive coatings on 316L stainless steel implants

Trends in Biomaterials …, 2004

Fast converging semi-blind SNR estimation for wireless MIMO-OFDM systems

Signal Processing, Communications and …, 2011

Orthogonal frequency division multiplexing is a multicarrier modulation scheme proving robustness... more Orthogonal frequency division multiplexing is a multicarrier modulation scheme proving robustness against Inter-symbol interference and offers high data rates. We investigate MIMO-OFDM system and propose novel SNR estimation algorithms by utilizing the information about the channel quality. Semi blind training symbols are adapted for analyzing parameters of adaptive transmission and periodic structure of the preamble is utilized for computationally efficient of SNR estimation. Theoretical analysis and simulation results illustrate the performance of proposed estimators with Normalized Mean Square Error.

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OFDM Performance with Optimum Training Symbols in WiMAX 802.16e

… for Real World Problems (VCON), 2010 …, 2010

This paper gives an analysis about OFDM based WiMAX 802.16e with optimum training symbols. In fur... more This paper gives an analysis about OFDM based WiMAX 802.16e with optimum training symbols. In further, performance is evaluated by considering the variable Delay Spread, Frequency Diversity, and with different Adaptive Modulation and Coding. The evaluation of system is performed over simulations showing, Packet error ratio [PER] versus mean Eb/No with Rayleigh fading. The system is considered with an exponentially

BER performance analysis for HSDPA with MIMO — SBCE predictors

... methods can be classified into higher-order statistics based techniques [6]-[8] and second or... more

International Journal of Distributed and Parallel systems (IJDPS)

… in Cooperative Cellular Systems, 3 (5), 111- …, 2012

ABSTRACT: We develop an energy-efficient routing protocol in order to enhance the stability perio... more

International Journal of Computer Networks & Communications (IJCNC)

… Allocation in Future Cellular Networks, 4 …, 2012