Research Activities

As our department has evolved over the past few years, we have developed research programs in new and exciting areas and we hope to continue in this direction. The thrusts areas of research in communications and signal processing include: Optical solitons, Wireless Communication, speech, image and video processing, VLSI, information theory, communication networks and OFDM systems. Our close affiliation with a number of research groups such as the Rsoft design group, USA has given us new dimensions for setting up state-of-art research laboratory on soliton transmission in Light wave communication field.

Optical soliton transmission system
(long-distance, high-speed optical transmission)

Our research goal is to realize long distance, large capacity optical transmission by taking advantage of optical nonlinear effects, including optical solitons and nonlinear techniques for generating ultra short optical pulses. The soliton is a wave that exists in nature that can propagate over long distances without any distortion of its waveform.

We have developed several novel soliton transmission techniques, such as the use of dispersion-managed (DM) solitons, loss merged soliton transmission systems and also wavelength division multiplexed (WDM) soliton transmission. By adopting these techniques, we can increase the transmission capacity and upgrade installed terrestrial or submarine cables. In addition, we have shown that the use of the DM soliton improves the power margin and the dispersion tolerance of long distance transmission systems.

Digital Communication through Wireless Channels

Our research goal is to effectively characterize the propagation channel for the design of effective transmitters, receivers and communication protocols. Various optimal diversity combining and adaptive modulation techniques are analyzed for their performance in the multiplicative fading & ISI channel. Various fading mitigating techniques such as OFDM, MIMO, Space-time coding are also being analyzed.

 

Publications in International Journals

  • Manoj Kumar, Ajay K Sharma and T. S. Kamal, “10 Gbps Optical Soliton Transmission Link using SOA In-Line Amplifier on Standard SMF at 1.3μm”, Published in Elsevier Science, International Journal for Light and Electron Optics, Optik, Germany, Vol. 118, pp 34-37, 2007.
  • Manjit Singh, Ajay K Sharma, R. S. Kaler and Manoj Kumar, “Timing jitter dependence on data format for ideal dispersion compensated 10 Gbps optical communication systems”, Available online w.e.f May 2007 for publication in Elsevier Science, International Journal for Light and Electron Optics, Optik, Germany.

 

  • Manoj Kumar, Ajay K Sharma and T S Kamal,“Simulative demonstration of soliton pulse stability over nonlinear regime in birefringent optical fiber”. Available online w.e.f September 2007 for publication in Elsevier Science, International Journal for Light and Electron Optics, Optik, Germany.
  • Manoj Kumar, Ajay K Sharma and T S Kamal, “Significance of Prechirping on Long-haul Path-Averaged Soliton Impulse in Re-Circulating Loop at 10 & 20 Gb/s with TOD”. Available online w.e.f October 2007 for publication in Elsevier Science, International Journal for Light and Electron Optics, Optik, Germany.

 

  • Manoj Kumar, Ajay K Sharma, T S Kamal and Jagjit Singh Malhotra, “Comparative Investigation and Suitability of Various Data Formats for 10 Gbps Optical Soliton Transmission Links at Varied Chirp". Available online w.e.f January,2008 for publication in Elsevier Science, International Journal for Light and Electron Optics, Optik, Germany.

Publications in National Journals

  • Manoj Kumar, Ajay K Sharma, T S Kamal and Moin Uddin, “Demonstration of Robustness of Path-Averaged Soliton Pulses in Loss-Managed Soliton Transmission Link over a Long Haul with10-Gb/s Modulated Signal”, Published in National Invertis Journal of Science & Technology, Vol. 1, No. 1, pp 55-60, 2007.
  • Ajay K Sharma, Manoj Kumar and T S Kamal, “Investigations on 24,500 km Long-haul Path-Averaged Soliton Transmission Link at 10 & 20 Gbit/s with Higher order Dispersion at Varied Chirp”, Published in International Journal of physical sciences, Ultra Science Vol. 19 (1) M, pp 211-216, 2007.

 

  • Manoj Kumar, Ajay K Sharma and T S Kamal, “Performance Evaluation of Path-Averaged Soliton Pulses in Loss-Managed 10-Gbps Soliton Transmission Link over a Long Haul”. (Communicated to Journal of Scientific & Industrial Research for publication).
  • Manoj Kumar, Ajay K Sharma and T S Kamal, “Long-haul Dispersion Managed Soliton Transmission Link over a Fiber Length of 18000 km with Loss and Periodic Amplification” (Communicated to Indian Journal of Pure & Applied Physics for publication).

 

Publications in International Conferences:

 

  • Manju Sharma and Manoj Kumar, “Performance evaluationfor wireless and wireline network with and without redundancy based on OPNET”. ( communicated to 8th IASTED International conference on wireless and optical communications (WOC  2008) May 26-28,2008.
  • Gaurav Sethi and Manoj Kumar, “Simulation and Performance analysis of DSDV, DSR, in MANETs”, accepted for   presentation and Publication in International computer Science and Technology conference, ICSTC 2008,  31st March – 3rd April, 2008, San Diego, California.

 

  • Gaurav Sethi and Manoj Kumar, “Performance analysis of AODV, DSR and TORA in mobile ad hoc network – a simulative study”, accepted for presentation and Publication  in International technology, education and development conference INTED 2008, 3rd – 5th March   2008, Valencia, Spain.
  • Gaurav Sethi and Manoj Kumar, “Simulation and comparison of   communication protocols  in ad hoc networks “Paper ID Number: 575- 778 accepted for   presentation and Publication in international conference, WSEAS 2008- 09,  February, 18-22, University of Cambridge  2008,  London.

 

  • Gaurav Sethi and Manoj Kumar, “Simulative analysis of routing  protocols in mobile adhoc networks” Accepted for presentation & publication in IEEE sponsored International conference- “4th International Symposium on ‘High Capacity Optical Networks and Enabling Technologies” HONET-2007, November 18 - 20, 2007, Dubai.
  • Kamaljit Singh Bhatia and Manoj Kumar, “RIN Evaluation for Optimum Performance of Optical Transmission System” Accepted for presentation & publication in IEEE sponsored International conference- “4th International Symposium on ‘High Capacity Optical Networks and Enabling Technologies” HONET-2007, November 18 - 20, 2007, Dubai.

 

  • Manju Sharma and Manoj Kumar, “Comparative Investigation on the Media access Delay in Wireless LAN for a Switched and Routed Network based on OPNET” Accepted for presentation & publication in IEEE sponsored International conference- “4th International Symposium on ‘High Capacity Optical Networks and Enabling Technologies” HONET-2007, November 18 - 20, 2007, Dubai,
  • Manoj Kumar, Ajay K Sharma and T S Kamal, “Demonstration of Robustness of Path-Averaged Soliton Pulses in Loss-Managed Soliton Transmission Link over a Long Haul with10-Gb/s Modulated Signal”, published in OSA & SPIE sponsored international conference “OPTICS IN SOUTHEAST”, September 6-8, 2006 at Charlotte, North Carolina, USA.

 

  • Ajay K Sharma, Manoj Kumar and T S Kamal, “Investigations on 24,500 km Long-haul Path-Averaged Soliton Transmission Link at 10 & 20 Gbit/s with Higher order Dispersion at Varied Chirp”, published in OSA & SPIE sponsored international conference “OPTICS IN SOUTHEAST”, September 6-8, 2006 at Charlotte, North Carolina, USA.
  • Sudhir Sharma & Manoj Kumar, “Impact of Harmonics in Electrical Distribution Systems” in  International Conference on Energy & Environmental Technologies for Sustainable Development at NIT, Jaipur.

 

  • Manisha, Manju Sharma and Ajay Sharma, “Robustness of NRZ, RZ, and CSRD Modulation on higher order dispersion and amplifier noise figure at 10 Gbps transmission link”, published in IEEE sponsored International conference held at Charlotte, North Carolina, USA, Sept., 6-8, 2006
  • Kamaljit Singh Bhatia, Harsimrat Kaur, Preety chauhan, “Effects of higher-order dispersion on XPM ”, International conference 3C-06, October 14-15, 2006.

 

Publications in National Conference

  • Manju Sharma and Manoj Kumar, “Comparative Investigation on Throughput and Client Response Time for a Switched and Routed Wireless LAN based on OPNET” Presented and published in National conference on Emerging Technologies in Computing and Communication, ETCC-2007, held at NIT Hamirpur during 27-28 July 2007.

 

  • Jagjit Singh, Manoj Kumar, “Comparative study of data formats for high bit rate lightwave transmission systems” 10th Punjab Science Congress, D-1-23, DAV Institute of Engg. & Technology, Jalandhar, Feb, 7-9,2007.
  • Kamaljit Singh, Manoj Kumar, “Studies on the impact of RIN on the performance of optical transmission” 10th Punjab Science Congress, D-1-21, DAV Institute of Engg. & Technology, Jalandhar, Feb, 7-9,2007.

 

  • Manju Sharma and Manoj Kumar, “Radio-over-Fiber for Cellular Systems: Benefits & Future Trends”, National Conference on “Electronic Circuits & Communication Systems (ECCS’06)”, February 9-10, 2006.
  • Manoj Kumar & Ajay K Sharma, “Recent Progress in Dispersion Managed Soliton Transmission Technologies”, IDSS-BC-2003.

 

  • Sudhir Sharma & Manoj Kumar, “Effects of Harmonics on Power Quality” in National Conference on Power Systems & Energy Management at IET, Bhaddal, 23rd May, 2003.
  • Vipan Arora & Jagjit Singh "A P2P Intrusion Detection System based on Mobile Agents",Science Conference  at HMV. Jal, Sept.’2005.

 

  • Manisha and Manju Sharma, “ 16-Channel WDM OC-192 Topology for OADM Network over a Medium haul Link”, published in 10th Punjab Science Conference held at DAVIET, Jalandahr February 7-9,2007.
  • Bindiya Jain & Monika “Dispersion Mechanism in Optical Fiber communication system”, National Conference on Communication and Embedded Systems (CES-2004) held at LLRIET, Moga, 12th March,2004.

 

  • Bindiya Jain & Neetu Sood’ “Optical Orthogonal Frequency Division Multiplexing” 10th Punjab Science Congress held at DAVIET, Jalandhar on 7-9 Feb., 2007.
  • Tripti Kapoor, presented a paper titled “High Volume   Transmission using DWDM” at 10th Punjab Science Congress held on 7-9 Feb., 2007.

 

  • Kiran Ahuja, Manjit Singh, “Characterization of different types of erbium doped fiber amplifiers on the basis of gain and noise figure” Innovations 2007, pp 159-167, at BBSBEC, Fatehgarh Sahib. Sirhind.06th - 07th  April 2007.
  • Kiran Ahuja, Manjit Singh, “Investigations on 10 Gb/s optical communication system with fiber type on timing jitter performance”, N.C.C.T, pp 98-104,  at, DIT Dehradun, HP. 10th February 2006.

 

  • Kiran Ahuja, Manjit Singh,” Wireless Optical N/W Security ” N.C.I.E.T, pp 167-170, at I.E.T, Bhaddal, Ropar. 17th-18th February, 2006.
  • Kiran Ahuja, Ms. Veerpal kaur, Ms. Rajnish Bala, “Biometric Recognition” C.E.S, pp 150 -156, at L.L.R.I.T, Moga. 12th March, 2004.

 

  • Kiran Ahuja, Mr. N.S.Thakur, “NN/W In RF Microwave Design”, I.S.N, pp 131-137, at H.E.C, Jagadhri. Haryana. 28th  February, 2004.
  • Kiran Ahuja, Mrs. Harsimrat kaur, “Universal Mobile Telecommunication System”, E.C.S.N, pp 122-129, at I.E.T, Bhaddal. Ropar. 1st November, 2003.

 

  • Shampy & Sukhdeep, “ Smart Antenna” National Conference held at RIET, Ropar on March,2007.
  • Kamaljit Singh Bhatia, Harsimrat Kaur “Performance evaluation using RIN for a long haul optical communication system” 2nd National Conference, IDEA-07, pp 276-279, March 2-3, 2007.

 

  • Kamaljit Singh Bhatia, Preety chauhan, Harsimrat Kaur, “Investigations of second order dispersions on RIN “National conference, WNES-2006, pp 14-21 ,28th July, 2006.
  • Kamaljit Singh Bhatia, Harsimrat Kaur  “Performance of Optical Signal in the presence of Fiber Nonlinearities due to Optical   Kerr Effect”  Third National Conference ,ADELCO 2006 ,pp 41-46 6-7 April  ,2006  

 

  • Kamaljit Singh Bhatia, Harsimrat Kaur ,Gurwinder Kaur ,“ “Impact of Higher Order dispersion compensation for Fiber Optical Communication System”, National Conference on Recent Trends in engineering and applications of computational techniques (REACT 07),pp 71-75 ,5-6 April,2006.
  • Kamaljit Singh Bhatia, Harsimrat Kaur, “Applicational view of programmable logic controllers”, National Conference on Recent Trends in engineering and applications of computational techniques (REACT 07), 5-6 April, 2006.

 

  • Kamaljit Singh Bhatia, Harsimrat Kaur, “Array of Neural Network Sensors from Gas Mixtures” ,National Conference   on recent trends in engineering systems (RTES-06), 3-4 feb,2006.