Research Areas

  • Signal Processing (speech)
  • Embedded Systems
  • VLSI (front end)
  • Analog Electronics
  • Signal Processing (Audio, Image, Biometric image)
  • Computer Communication Networks
  • Engineering Education

Research Faculty Details

# Research Supervisor Specialization Awarded University Year of Award
1.Dr B KanmaniDiffuse Optical TomographyIndian Institute of Science2006
2.Dr Rajeshwari HegdeEmbedded SystemsBangalore University2013
3.Dr. C GururajImage ProcessingJain University2017
4.Dr.Prasanna Kumar M KSpeech processingVTU2017
5.Dr.Manjunath P SWireless CommunicationS V University2018
6.N Srinivasa RaoVLSI (front end)S V University2019
7.K BalachandraSignal Processing (Audio)IIIT Bangalore2019
8.M Vasantha LakshmiSignal processingVTU2021
9.K P PushpavathiSignal processing (Pursuing)VTU2021

Research Scholars

S.No Details
1.

Guide Name : Dr Veena Hegde, Co-guide Dr Rajeshwari Hegde

Student Name : Feroz Morab

Field of Study : High Resolution DOA and Fast Convergence Beam Former For Mobile Communication

Scholar Type : Full Time

Qualification : Ph.D

Year of Admission : 2018

2.

Guide Name : Dr Rajeshwari Hegde

Student Name : Ramachandra Ballary

Field of Study : Reconfigured SDR For Wireless Communication With Reduced Power Consumption & High Throughput

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2016

3.

Guide Name : Dr Rajeshwari Hegde

Student Name : Beena Nayak

Field of Study : Design of Rectangular Microstrip Patch Antenna of Bandwidth 2.4 Ghz With Reduced Height For WLAN Applications

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2016

4.

Guide Name : Dr Rajeshwari Hegde

Student Name : Saritha I G

Field of Study : Design and Implementation of Resource allocation management and security for Cyber Physical System

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2016

5.

Guide Name : Dr Rajeshwari Hegde

Student Name : Ramya B B

Field of Study : Agile & Lean Framework for Value Creation in Software Development

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2016

6.

Guide Name : Dr B Kanmani

Student Name : Sainath J S

Field of Study : mplementation/Procedure for analyzing real time high entropy data and generating a relevant data result at a considerably low bandwidth which can be interfaced to a low power embedded processor

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2015

7.

Guide Name : Dr B Kanmani

Student Name : Vasantha Lakshmi M

Field of Study : Simulation Study of PAPR reduction in OFDM schemes

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2013

Status : COMPLETED

8.

Guide Name : Dr Rajeshwari Hegde

Student Name : Asha K S

Field of Study : Performance Improvisation of VANET System

Scholar Type : Part Time

Qualification : M.Sc (Engg by Research)

Year of Admission : 2013

Status : PURSUING

9.

Guide Name : Dr B Kanmani

Student Name : Meena M S*

Field of Study : Control Electronics for precision measurement with ultra-cold atoms

Scholar Type : Part Time

Details : Control Electronics for precision measurement with ultra-cold atoms.( *Registered in the research center of ECE department )

Qualification : M.Sc (Engg by Research)

Year of Admission : 2010

Status : COMPLETED

File Name : Degree awarded on 27.1.2014

10.

Guide Name : Dr B Kanmani

Student Name : Suma M N*

Field of Study : Communication

Scholar Type : Part Time

Details : Study and Development Algorithms for OFDM ( *Registered in the research center of ECE department )

Qualification : Ph.D

Year of Admission : 2010

Status : COMPLETED

11.

Guide Name : Dr B Kanmani

Student Name : Jayanthi M

Field of Study : Interactive Segmentation Techniques for the visualization of abdominal CT images

Scholar Type : Part Time

Qualification : Ph.D

Year of Admission : 2010

Status : COMPLETED

Contact Person: Dr.B Kanmani
Research Facility: Research: The faculty of the department continuously engage in research in the areas of Signal Processing, Communication, Embedded Systems, VLSI, Computer Networking and Engineering Education.
Description: he department is well equipped for faculty and students to pursue research in the above areas. Some of the equipment are: Dual channel Arbitary Function Generator; Four Channel Digital Storage Oscilloscope; Digital Communication modules; Spectrum Analyzer; Benchmark Wireless Communication Equipment (Wicom-T); Analog and Digital Communication modules by Lab Volt; Bench mark Optical fiber kit; NI-ELVIS; QNET Board Optical source and Detectors NI Lab View Software; Microwave Test bench; Texas Instruments DSP Kit, Blackfin DSP Kit, ADSP DSP kit, VHDL Kit, DM642 Digital Media Developer Kit, XILINX Software CPLD Trainer Model, FPGA Trainer Model, Spartan-II Trainer Model Dev Kit 8500, Cube servo kit,Qual Net tool; Pic Microcontroller, 8051 Interface Units, 8086 Microprocessor interface units, MSP430 kits, INTEL ATOM Kits, WARP V3 Node, DM642 Digital media processor.
Files:

Research Grants

Project Title : FDP on “Smart City Solutions for Sustianable Future”

Sanctioned Year : 2021

Amount : Rs 93, 000/-

Funding/Sanction agency : ATAL, AICTE

Status : Ongoing

Principal Investigators : Dr Rajeshwari Hegde

Project Title : Karnataka State Council for Science & Technology (KSCST) under the Student Project Programme-44th series for the project ‘“Detection of Brain Tumor using Artificial Intelligence Techniqu

Sanctioned Year : 2021

Amount : Rs.4,000

Funding/Sanction agency : Karnataka State Council for Science & Technology (KSCST)

Status : Ongoing

Principal Investigators : Dr. C Gururaj

Project Title : Competitive research grant: analysis of brain signals

Sanctioned Year : 2019

Amount : Rs. 2 lakhs

Funding/Sanction agency : VTU, TEQIP

Status : Ongoing

Principal Investigators : Rajeshwari Hegde

Project Title : Modernization of Digital Communication Lab

Sanctioned Year : 2013

Amount : Modernization of Dig

Funding/Sanction agency : AICTE-MODROBS

Status : Completed

Principal Investigators : B Kanmani

Project Title : ‘Study, Design, Implementation and Performance Analysis of Wireless Communication Concepts’(not commenced)

Sanctioned Year : 2013

Amount : Rs 1 Crore

Funding/Sanction agency : AICTE-Research Park

Status :

Principal Investigators : B Kanmani In collaboration with National Instruments

File Name : Not started

Link

Project Title : In collaboration with National Instruments

Sanctioned Year : 2010

Amount : Rs 9 lakhs

Funding/Sanction agency : AICTE-IIPC

Status : Completed

Principal Investigators : B Kanmani

Project Title : Modernization of Signal Processing and embedded lab

Sanctioned Year : 2009

Amount : Rs 14.3 lakhs

Funding/Sanction agency : AICTE-MODROBS

Status : Completed

Principal Investigators : B Kanmani & Rajeshwari H

Project Title : Modernization of Analog & Digital Electronics Lab

Sanctioned Year : 2008

Amount : Rs 6 lakhs

Funding/Sanction agency : AICTE-MODROBS

Status : Completed

Principal Investigators : B Kanmani

Project Title : Study & implementation of Telecommunication Engineering Circuits & Systems

Sanctioned Year : 2008

Amount : Rs 6.5 lakhs

Funding/Sanction agency : BMS College: In-House Research & Development

Status : Completed

Principal Investigators : B Kanmani

Project Title : Modernization of Signal Analysis & Synthesis

Sanctioned Year : 2002

Amount : Rs 11.5 lakhs

Funding/Sanction agency : AICTE-MODROBS

Status : Completed

Principal Investigators : B Kanmani

Research Students Publications

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : Orthogonal frequency division multiplexing peak-to average power ratio reduction by best tree selection using coded discrete cosine harmonic wavelet packet transform

Research Description : A new orthogonal frequency division multiplexing (OFDM) with reduced peak-to-average power ratio (PAPR) based on coded discrete cosine harmonic wavelet packet transform (DCHWPT), is proposed. In this method, tree pruning is done for the selection of a tree structure with minimum PAPR. To identify different tree structures, Gray code is used which is communicated as side information to the receiver. Also to improve bit error rate (BER) performance and reduce PAPR, Hadamard codes are employed. The proposed method based on DCHWPT exploits the desirable discrete cosine transform (DCT) properties like energy compaction/low leakage, better frequency resolution and its real nature, compared with those of discrete Fourier transform. Further, the harmonic wavelet employed has built in decimation without any associated antialiasing filters and easy reconstruction by concatenation of different scales in frequency (DCT) domain with no image rejection filters and complicated delay compensation makes the proposed wavelet packet simple in implementation. The proposed OFDM discrete cosine harmonic wavelet packet (DCHWP-OFDM) which leverages the advantages of DCHWPT has been used for BPSK modulated signals. The DCHWP-OFDM provides an improvement of PAPR reduction of 2.4 and 3.4 dB as compared with those of Haar and Daubechies-4 wavelet packet OFDM, respectively. This reduction in PAPR is with a BER performance in the range of 0.001-0.0001 at an signal-to-noise ratio of 10 dB.

Faculty Coordinator : B Kanmani

Link

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : A New OFDM System Based on Discrete Cosine Harmonic Wavelet Transform (DCHWT) for PSK and QAM,

Research Description : This paper proposes a new orthogonal frequency division multiplexing (OFDM) system, based on discrete cosine harmonic wavelet (DCHWT) for PSK and 16-QAM modulated signals. This system uses energy compaction property of discrete cosine transform (DCT) that provides low leakage in subcarriers. DCHWT based OFDM system provides improved performance in terms of bit error rate (BER) and reduction in the peak to average power ratio (PAPR) compared to conventional cyclic prefix (CP) based Fourier transform OFDM (DFT-OFDM). Application of μμ -law companding to proposed system further improves the PAPR performance. The complementary cumulative distribution (CCDF) plots corroborate the same. BER performance is on par or better than that of Haar wavelet based OFDM in addition to improvement in PAPR. PAPR improved is in the range of 0.8–2.3 dB compared to Haar and DFT OFDM respectively, with remarkable improvement in BER. Proposed method is simple, does not require explicit decimation, interpolation, associated filtering and delay compensation for reconstruction, compared to other time domain wavelet transforms.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : PAPR REDUCTION WITH ERROR CONTROL CODING IN OFDM

Research Description : Multicarrier schemes are supported to high data rate. Orthogonal Frequency Division Multiplexing (OFDM)
and Filtered Multi-Tone (FMT) are two techniques of multicarrier schemes. OFDM is an attractive air-interface
for next-generation wireless network without complex equalizer. OFDM is designed such a way that it sends
data over hundreds of parallel carrier which increases data rate. OFDM scheme is suffer by inter-symbol
interference (ISI) problem and peak-to-average power ratio (PAPR). An OFDM signal consists of a number of
independently modulated carriers, which can give a large peak-to-average power ratio when added up
coherently. When N signals are added with the same phase, they produce a peak power that is N times the
average power. For this example, the peak power is 16 times the average value. The peak power is defined as
the power of a sine wave with amplitude equal to the maximum envelope value. Hence, an unmodulated carrier
has a PAP ratio of 0 dB. An alternative measure of the envelope variation of a signal is the Crest factor, which
is defined as the maximum signal value divided by the RMS signal value. For an unmodulated carrier, the Crest
factor is 3 dB. This 3-dB difference between the PAPR and Crest factor also holds for other signals, provided
that the center frequency is large in comparison with the signal bandwidth. A large PAP ratio brings
disadvantages like an increased complexity of the analog-to-digital (A/D) and digital-to-analog (D/A)
converters and a reduced efficiency of the RF power amplifier.
To reduce the PAPR, many techniques have been proposed, such as clipping, coding, partial transmit sequence
(PTS), selected mapping (SLM), interleaving, hadamard transforms and other techniques etc. Among those
PAPR reduction methods, the simplest method is to use the clipping method. However, using clipping
processing causes both in-band distortion and out-of-band distortion but this can be reduce by using filtering
after clipping. This paper focus is on the clipping and filtering technique to reduce PAPR of OFDM system.
Using simulation results the analyzing effect of clipping and filtering technique to reduce the PAPR.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : Spectral estimation and Spectral sensing for cognitive Radios”, National Conference on Women in Science and Engineering

Research Description : Spectrum estimation and spectrum sensing are primarychore of cognitive radio (CR), where in dynamically it explores the radio spectrum and reliably determine portion of the frequency bands that has been used and unused by the primary users. In this paper we propose spectrum estimation using Discrete Fourier transform (DFT) which has Non parametric estimators like Periodogram, Welch and Multitaper methods. Next Discrete cosine transform (DCT) whose performance is compared with respect to fast Fourier transform (FFT) using variance as the parameter. Further spectral sensing using wavelet packet transform for various decomposition level and different types of wavelets is being compared based on its performance parameter Receiver operating characteristics (ROC).In addition this paper also discuss about spectrum sensing using orthogonal frequency division multiplexing (OFDM).Simulation results show DCT provides better spectral estimation than DFT and has less variance. Further for wavelets Daubechies wavelet has better performance in ROC with increase in depth andorder of 10.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : PAPR Reduction using SLM and Companding Technique”

Research Description : Orthogonal frequency division multiplexing (OFDM) is an modulation and multiplexing technique preferred in present wireless environment. One of the issues to be addressed in OFDM is high peak to average power ratio (PAPR) of the received signal which may cause power amplifiers at receivers to go into saturation. In this paper a selective mapping technique (SLM) associated with Reed Solomon (RS) code and µ law Companding is proposed to reduce PAPR in OFDM system. The simulation results shown with CCDF graphs indicate improved performance in PAPR with RS coding and companding as compared to conventional method. Further the advantage gained with using Reed Solomon (RS) coding is good error correcting capability in multipath environment.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma(1BM08PEN02)

Title of the Paper : Coded Wavelet Packet OFDM with Companding for PAPR Reduction

Research Description : An this paper, coded wavelet packet OFDM with companding is proposed. For the proposed OFDM, at the transmitter PAPR is calculated for different coded tree structures developed and tree with minimum PAPR is selected for transmission. The proposed wavelet packet is advantageous in terms of performance as compared to without coding and companding. Simulation performed for Haar and DB WPT structures with BPSK modulation shows that BER performance is also preserved in addition to minimum PAPR.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma (1BM08PEN02

Title of the Paper : Channel Equalization with efficient variable stepsize Transform domain adaptive algorithm

Research Description : Equalization techniques compensate for the time dispersion introduced by communication
channels and combat the resulting inter-symbol interference (ISI) effect. The purpose of an
adaptive equalizer is to operate on the channel output such that the cascade connection of the
channel and the equalizer provides an approximation to an ideal transmission medium. This
paper compares existing adaptive algorithm for channel equalisation for both DFT and DCT
based OFDM system. Simulations results show that performance of Transform Domain
Variable stepsize Griffith LMS(TVGLMS) algorithm in channel equalization performs with
better convergence speed and better error misadjustment than the LMS algorithm. Further
simulation results shows that DCT based OFDM system outperforms DFT –OFDM in terms
of BER and PAPR .

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : Developments in orthogonal frequency division multiplexing (OFDM) system-a survey

Research Description : In today's communication scenario, high data rate single-carrier transmission may not be feasible due to too much complexity of the equalizer in the receiver. To overcome the frequency selectivity of the wideband channel experienced by single-carrier transmission, multiple carriers can be used for high rate data transmission. Orthogonal frequency division multiplexing (OFDM), is multicarrier system which has become a modulation in physical layer of next generation WiMAX, LTE system. In this paper effort is made to present challenges in OFDM and work done so far in channel equalisation and different transforms used in OFDM system.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M N Suma (1BM08PEN02)

Title of the Paper : The OFDM system based on Discrete Cosine Harmonic Wavelet transform

Research Description : his paper proposes a new OFDM systems based on A Discrete Cosine Harmonic Wavelet (DCHWT), for BPSK and QPSK signals. This has been realized by proposing new separate structures for BPSK and QPSK signals. This enables to utilize the energy compaction of DCT and the computational simplicity of DCHWT for OFDM systems. The proposed OFDM systems provide improved performance in terms of BER and PAPR compared to those of conventional OFDM based on DFT /DCT with Cyclic prefix. The new OFDMs have a better or equal performance compared to those of some of the existing wavelet based OFDMS.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M Vasanthalakshmi

Title of the Paper : PAPR REDUCTION IN OFFSET QPSK OFDM THROUGH LOSSY SOURCE CODING

Research Description : Abstract: Orthogonal Frequency Division Multiplexing along with the multiple accesses is the modulation technique used in the fourth generation wireless communication. With the fast growing technology and the huge demand for the increase in the bandwidth has made OFDM as the best modulation technique for high speed transmission. The spectrum of the bandwidth is effectively utilized in an OFDM. This provides higher efficiency and improves the overall performance of the system. Though OFDM has all these advantages there are certain drawbacks which need to be addressed. The major ones include Inter carrier Interference and the ratio of the peak to the average power. The research idea was to consider the drawback and try to overcome it. Hence ratio of the peak to the average power was considered. The methodology is to generate the OFDM symbols with Offset QPSK as the modulation technique and analyse the peak power and peak to average power ratio of the generated symbols and apply the proposed method to reduce it. The lossy coding method falls under the category of the signal distortion. The simulation is performed in MATLAB. The simulation results of the proposed method and the amount of the reduction achieved in ratio of the peak to average power along with the amount of the bit error rate have been discussed in the paper.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M Vasanthalakshmi

Title of the Paper : Digital circuit simulation study of Lossy source coding for PAPR reduction

Research Description : Telecommunication field is emerging rapidly with the huge demand for data communication and orthogonal frequency division multiplexing is one such modulation. The efficiency of an OFDM technique is high and multipath fading is improved to a greater extent. In spite of these benefits with an OFDM technique the instantaneous increase in the power output is the major drawback of an OFDM which results in high Peak to average power ratio. Due to this high PAPR the signal quality will degrade and reduces the efficiency. To reduce the PAPR in the OFDM symbol, a Lossy Coding method was proposed and implemented in Lab VIEW. OFDM symbols are generated for different symbol lengths and peak power is calculated for all possible combinations of the symbol lengths. The observation made was that only four combinations had high value of peak power compared with the other possible combinations. The proposed method reduces the peak power of the four combinations which in turn reduces the PAPR but with the signal distortion. This enforces Bit error rate. We also observed that as the length of the symbol increases the bit error rate will decrease

Faculty Coordinator :

Link

Student Name : M Vasanthalakshmi

Title of the Paper : PAPR Reduction through Lossy Coding

Research Description : Orthogonal Frequency division multiplexing is the modulation technique used for the fourth generation wireless communication system. In OFDM, Signals can be modulated by multiple carriers. OFDM uses the bandwidth of the spectrum efficiently. But the limitation of the OFDM system is the high Peak to Average Power Ratio (PAPR) which results in the degradation of the signal quality. Hence reducing the PAPR is the major criteria for any systems. Several researchers has proposed and implemented the methods to reduce the Peak to average power ratio. In this paper an attempt has been made to provide an overview of the different PAPR reduction techniques in OFDM and proposes new lossy coding method which can be adopted to reduce the PAPR in the OFDM systems with the introduced BER

Faculty Coordinator : Dr. B Kanmani

File Name : DOI: 10.1109/ICAMMAET.2017.8186704

Link

Student Name : M Vasanthalakshmi

Title of the Paper : Lossy Source Coding Method for PAPR Reduction in Bpsk Ofdm

Research Description : : OFDM has been considered as the advanced modulation technique to provide higher data rate with several advantages like high spectral efficiency and is most widely used modulation technique in the fourth generation wireless communication. Besides the advantages of the OFDM there are several disadvantages like high Peak to Average power ratio and the Inter carrier Interference. Based on the survey several papers are published in the area by several researchers. In this paper an effort has been made to reduce the Peak to average power ratio. In this work, a new Lossy coding method has been proposed to overcome the drawback of PAPR and the simulation results of the same have been discussed. The proposed method lies in the signal distortion category and hence the Bit error rate also been taken into consideration and has been discussed.

Faculty Coordinator : Dr. B Kanmani

Link

Student Name : M Vasanthalakshmi

Title of the Paper : PAPR of QPSK OFDM modulation schemes: A comparative study

Research Description : Abstract: With the rapid growth in the field of telecommunication, there is a huge demand for the increase in the bandwidth. Orthogonal Frequency division multiplexing is an advanced modulation technique suitable for the fourth generation wireless communication due to the improved spectral efficiency and the bandwidth. Besides these benefits of the OFDM there are some major concerns in an OFDM which needs to be taken care. Inter symbol interference and the Peak to average power ratio [PAPR] is the major drawbacks affecting the performance of an OFDM symbols. In this work PAPR has been considered. The comparative study of PAPR of QPSK OFDM and the Offset QPSK OFDM has been done. Initially OFDM symbols are generated with the QPSK as the modulation techniques for the different symbol lengths ranging from 8 to 12 and the PAPR has been calculated for all combinations. The number of the combinations resulting in a high value of PAPR was 16 for all the symbol lengths. The experiment was repeated with the offset QPSK for the same symbol lengths and the numbers of the combinations resulting in a high value of PAPR were reduced to 8 for all the symbol lengths. The mean of the QPSK and the Offset QPSK were computed. There was a reduction in the mean with the offset QPSK compared with the QPSK. The simulation results and the mean of the same have been discussed in this pape

Faculty Coordinator : Dr. B Kanmani

File Name : Vasantha Lakshmi, M and Kanmani, B, PAPR of QPSK OFDM Modulation Schemes: A Comparative Study (2019)

Link

Industry Collaborations / MoUs

S.No Details
1.

Title : Dr B Kanmani, Department of Telecommunicatin Engineering, singed an MOU with Indian Society for Tech

Description: Dr B Kanmani, Department of Telecommunicatin Engineering, singed an MOU with Indian Society for Technical Education (ISTE) , Working Professionals Learning Project (AICTE Project) with office at UVCE Bangalore and represented by Prof N J Shetty, the Program Director, towards development of Learning Material for, ‘Effective implementation of Outcomes Based Education leading to Accreditation’ (on June 6, 2019).