Positions open for Ph.D student and Post Doctoral fellow.

Our Vision

The group is working towards to design and implement of blind wireless receiver (BWR) including symbol timing offset (STO) estimation, carrier frequency offset (CFO) estimation and modulation classification, performance analysis of cooperative communication, secrecy capacity analysis of cooperative communication in the presence of cognitive radio and designing of orthogonal or near orthogonal signal for wireless communication.

In next generation wireless communication spectrum crisis will be the primary issue. Despite the shortage of spectrum, huge amount of spectrum is used just to transmit redundant data or training sequences and thus immense portion of allocated spectrum is not utilized by desired users. The most effective way to overcome this is to design a BWR for communication systems. We are trying to design a BWR which increases the spectrum efficiency of communication systems without using redundant data or training sequences. The BWR can also work as a universal receiver by receiving different standard signals through a single receiver.

The idea of BWR is not only limited to the theoretical studies but it also provides a practical aspect to the system. So our lab is equipped with modern RF hardware to design and implement BWR and cognitive radio. The research group has already set up a BWR for single carrier signal and working on to implement a testbed for orthogonal frequency division multiplexing (OFDM), multiple input and multiple output (MIMO), MIMO-OFDM, single carrier- frequency division multiplexing (SC-FDMA) and multi-carrier cone division multiplexing (MC-CDMA).

While designing BWR for multi carrier signal, the most difficult part is of implementing blind timing and blind frequency synchronization at the receiver, getting accuracy of them is a more challenging task. Currently, group members are developing a non-Gaussian approximation algorithm to get a closed form solutions of synchronization problem. Another group is looking up an iterative method to estimate STO and CFO accurately.

Cooperative communications, a promising technology for wireless transmissions, have taken a lot of attention in recent few years. However, they become vulnerable by the eavesdropper due to the multi-hop communications. A group is working to protect data from the eavesdropper by physical layer networking coding. The secrecy capacity and secrecy outage capacity are being investigated in the different channel scenarios to enhance the security to the legitimate users. The group is also investigating how secrecy capacity can be applied in a cognitive radio networking.

Another objective of this group is to apply algebraic approach of designing orthogonal and semi-orthogonal sequences (code) for wireless communication. A group is working on how a sophisticated code such as Golay complementary pair (GCP), complementary sequence set (CSS), quasi-complementary sequence set (QCSS ), and low correlation zone (ZCZ) can be constructed to use for quasi asynchronous MC-CDMA and SC-FDMA-CDMA systems. The group is also working how these sequences can be used for STO and CFO estimation.

Latest Events

Our group member Mr. Rahul Gupta, got a postdoc position at IRIDA Research Centre for Communication Technologies, University of Cyprus, under the supervision of Ioannis Krikidis, IEEE Fellow.

CONGRATULATION Dr. Avik for completion of his Ph.D and best wishes for his future journey.

Dr. Sudhan Majhi has been invited as a Speaker at the international Conference on Wireless Communications, Signal Processing and Networking (WiSPNET) 21-23 March, 2019, Tamil Nadu, India.

Dr. Sudhan Majhi has been invited as a Guest Speaker at the International Conference on Computer, Electrical and Communication Engineering, 19 January, 2019, Kolkata, India.

Dr. Sudhan Majhi, Dept of EE, has became an Editor of IEEE Communications Letters

Congratulations Vishakha for winning the BEST project award for M.Tech in Communication System Engineering..!

Dr. Sudhan Majhi has been invited as one on the Keynote speakers in the 3rd IEEE International Conference on Computing Communication and Security (ICCCS 2018). Click here for details.

Congratulations Rahul Gupta for winning the BEST POSTER AWARD from EE Dept., in Research Scholars' Day 2018, organised by IIT Patna

Rahul Gupta, Shibsankar Das, and Nibedita Nandan presented poster in Research Scholars' Day 2018, organised by IIT Patna

Rahul Gupta and Shibsankar Das presented a glimpse of their research work in a event named "My research in 3 minutes", at Research Scholars'Day 2018, IIT Patna

Congratulations. Manish Kumar, the first PhD student of our lab, successfully defended his PhD thesis.

Completed GIAN course on "Mathematical Framework of Sequence Design for Wireless Communication Systems". Click here for details.

Dr. Sudhan Majhi has been selected for Young Faculty Research Fellowship in the Visvesvaraya Ph.D scheme.  ' medialabasia Young Faculty Fellowship 2016.'

Dr. Sudhan Majhi has been provided with the 'Associate Editor' role in the journal 'Circuits, Systems, and Signal Processing'.

Another approved GIAN course: Number Systems for Digital Signal Processing, Foreign expert: Prof. Benjamin Premkumar.

IIT Patna is going to organize GIAN course on "Advanced Wireless Networks: Joint Design of Technology and Business Models". Registration link is http://www.gian.iitkgp.ac.in/GREGN/index

Please also have a look http://www.iitp.ac.in/gian/

A paper titled "Blind Synchronization of OFDM System and CRLB Derivation of CFO over Fading Channels" has been accepted for ICICS 2015, Singapore (New)

Dr. Sudhan Majhi has been elevated to the grade of IEEE Senior Member (New)

"Blind Symbol Rate estimation and testbed implementation for OQPSK modulated signals" published in the IEEE Transactions on Vehicular Technology, 2015

Filed a Patent of titled "Blind Wireless Receiver (BWR) Testbed"

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