Wireless Communications and Networks Group

About Us

Welcome to the Wireless Communications and Networks Group (WCNG) section. WCNG focuses on research, teaching and innovation in all aspects of wireless communication systems and networks. The research fields are application oriented that get the inspiration from the need and the technological evolution in the field of wireless communications.

Our Mission

Our mission is to develop an energetic, focused and collaborative environment for learning and research as well as an effective teaching program on wireless communication and networking.

Our Objective

The research objective is to carry out comprehensive study and investigations for the development of novel methods and algorithms under a mathematical framework verified through simulations and experimental setup.

Group Research Areas

Our research areas span modern wireless communication systems, mobile and sensor networks. Some of our focus areas are:

  1. Multi-carrier and multi-antenna wireless communications (OFDM, FBMC, GFDM, and Massive MIMO systems)
  2. Resource management for Device-to-Device (D2D) communications in 5G cellular networks
  3. Interference management and coordination for wireless mobile networks and satellite communication
  4. Cooperative communicationsvia Artificial Intelligence and Machine Learning based approaches
  5. Software Defined Radios (SDR) for Military Tactical Communication Networks

  • Name: Dr. Danish Nisar

    Associate Professor

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  • Name: Mr. Jehanzeb

    Assistant Professor

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  • Name: Mr. M. Ahmad

    Lecturer

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Ongoing funding
  1. 5G-SDR: A Flexible Solution for Tactical Communications: The project with a funding of 26 million PKR by IGNITE, National Technology Fund, aims to develop the first 5G Air‐Interface testbed in Pakistan. We will be implementing the advanced 5G communication techniques such as filter‐bank multi‐carrier and massive MIMO processing on high‐end digital processing platforms interfaced with 5G‐capable multi‐antenna RF front‐ends. The 5G‐SDR project not only instills the passion of applied 5G research in the undergraduate and postgraduate students at CASE, but also in collaboration with CARE – the industrial partner, packages it into a commercially sellable tactical communication waveform for the national and regional defense forces. Link: http://www.case.edu.pk/Research/5gSDR.aspx
  2. Decentralized Communications for Swarm Robotics Lab: The swarm robotics lab with funding of 79 million PKR under National Center for Robotics and Automation from Higher Commission of Pakistan (HEC) aims to establish a scaling solution by providing an application agnostic swarm intelligence platform. The lab is composed of three sublabs, i.e., Swarm Intelligence Lab, Computer Vision and AI Lab and Decentralized Communications Lab. The most important aspect of this lab would be to generate a generic scaling solution that would work for any kind of application that is able to benefit from a multi‐agent robotic system in an optimal way. Such an undertaking will be achieved using the state‐of‐the‐art swarm intelligence algorithms. Key Application areas are: Disaster Management, Water Quality Monitoring and Intelligent Video Surveillance. Link: https://www.uettaxila.edu.pk/CPED/SwarmRoboticsLab.asp
Past Projects
  1. An early flood warning and management system (National Grassroots ICT Research Initiative):The model demonstrates the use of the ESP32 development board to gather data from the sensors on precipitation, water flow and water level. The raw data is transmitted to the IoT platform using a 4G device connected to the ESP microcontroller where it is processed using an online IOT platform based on the algorithm developed in MATLAB, after which the warning alert is sent to the community. The end users are also provided with an android application to monitor the flood risk situation in real time. (The IEEE paper has passed the review stage and has been accepted in the conference for publication)
  2. Multi-Antenna Diversity Demonstration using Ettus Research USRP Platforms (CARE Pvt. Ltd.): Findings and results published in IEEE conference (Please refer to the list of publications)
Other Projects
  1. Improving spectral efficiency of Device to Device cellular networks:Since cellular spectrum is scarce and expansive, the idea is to come up with spectrally efficient resource allocation algorithms that demonstrate high spectral efficiencies compared to the state of the art.
  2. Interference management in Wireless AdHoc networks:Managing Interference for a decentralized network such as an adhoc network poses a huge challenge. The project involved study of interference models using stochastic geometry of network nodes and computation of various system parameters such as outage probabilities, signal to interference ratio, transmission capacities with outage constraints.
  3. OFDM Modem Design incorporating IEEE 802.11a standard and performancecomparison over various channel conditions on MATLAB:The project involved the implementation of basic OFDM physical layer design and comparison of various BER vs SNR performance curves under different channel conditions.
  4. Mathematical Modeling of wireless channel precoder design that maximizes the capacity: In this project, a mathematical model had developed to design a precoder that maximizes the capacity of block-based/MIMO system assuming perfect channel state information is available at the transmitter side.
  5. A low Power Analog Amateur Wideband FM Transceiver design with a carrier tuning range of 10 MHz – 30 MHz:The project involved the hardware implementation of an Amateur Wideband FM Transceiver that is able to transmit and receive the voice data over 1km radius with acceptable SNR.
Current Publications
  1. Waqas Anjum and M. Danish Nisar, “On the Optimum Preamble Design for Channel Estimation in FBMC-OQAM Systems”, accepted for publication in 28th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC-2017), Montreal, Canada, October 2017.
  2. Matihullah, Huzaifa Khan, Usama Sharif, and M. Danish Nisar, “Multi Antenna Diversity Demonstration via Alamouti Scheme on USRP Boards”, accepted for publication in International Symposium on Wireless Systems and Networks (ISWSN-2017), Lahore, November 2017.
  3. Afifa Ishtiaq, Atif Javed, Arslan Akhtar, Usama Bin Zulfiqar, and M. Danish Nisar, “Efficient Implementation of OFDM Waveform on Xilinx FPGA”, accepted for publication in International Symposium on Wireless Systems and Networks (ISWSN-2017), Lahore, November 2017.
  4. Ni. Qiang; Jehanzeb ; Zhang Yang; Guan Sheng-Uei;“A Minimum Distance guided Genetic Algorithm for Multi-User Detection in a Multi-Carrier CDMA wireless broadband system”, Broadband Communications, Networks and Systems, 2008, BROADNETS 2008 UK. 5th International Conference on 8-11 Sept. 2008 Page(s): 500 – 505
Prior Publications
  1. M. Danish Nisar. "Minimax Robustness in Signal Processing for Communications", PhD Dissertation, Published by Shaker Verlag, ISBN 978-3-8440-0332-1, August 2011.
  2. A Papadogiannis, M Farber, A Saadani, M Danish Nisar, P Weitkemper, T de Moraes, J Gora, N Cassiau, D Ktenas, J Vihriala, M Khanfouci, T Svensson. "Pass it on: Advanced relaying concepts and challenges for networks beyond 4G", in the IEEE Vehicular Technology Magazine, June, 2014.
  3. M. Danish Nisar and M-Slim Alouini. "Minimax Robust Relay Selection Based on Uncertain Long-term CSI", in the IEEE Transactions on Vehicular Technology, Sep. 2013.
  4. Anlei Rao, M. Danish Nisar, and M-Slim Alouini. "Robust Power Allocation for Multi-Carrier Amplify-and-Forward Relaying Systems", in the IEEE Transactions on Vehicular Technology, Sep. 2013.
  5. Thiago M. de Moraes, M. Danish Nisar, Arturo A. Gonzalez, and Eiko Seidel. "Resource Allocation in Relay Enhanced LTE-Advanced Networks", Invited paper in the EURASIP Journal on Wireless Communications and Networking, Nov. 2012.
  6. Sangchul Moon, Woo-Suk Ko, David Vargas, David G. Serrano, M. Danish Nisar, and Volker Pauli. "Enhanced Spatial Multiplexing for Rate-2 MIMO of DVB-NGH System", Invited paper in the 19th International Conference on Telecommunications, April 2012.
  7. Volker Pauli, M. Danish Nisar, and Eiko Seidel. "Reproducible LTE Uplink Performance Analysis using Precomputed Interference Signals", in the EURASIP Journal on Advances in Signal Processing (Special Issue: Reproducible Research in Signal Processing), September 2011.
  8. M. Danish Nisar and Wolfgang Utschick. "Minimax Robust A-priori Information Aware Channel Equalization", in IEEE Transactions on Signal Processing, Volume 59, pp 1734 - 1745, April 2011.
  9. M. Danish Nisar, Wolfgang Utschick, and Thomas Hindelang. "Maximally Robust 2-D Channel Estimation for OFDM Systems", In IEEE Transactions on Signal Processing, Volume 58, pp 3163 - 3172, June 2010.
  10. M. Danish Nisar, Wolfgang Utschick, and Josef Forster. "Robust 2-D Channel Estimation For Staggered Pilot Grids In Multi-Carrier Systems: LTE Downlink As An Example", Book Chapter, Lecture Notes in Electrical Engineering (Vol 41), Multi-Carrier Systems & Solutions, 2009, pp 113 - 121.
  11. M. Danish Nisar. Master Thesis "Channel Estimation and Equalization for Evolved UTRA Uplink", at TechnicalUniversityMunich in Oct, 2006.
  12. M. Danish Nisar. Bachelor Thesis "Design and Implementation of a DS-CDMA based Communication link, employing DSP Board for Receiver's baseband processing", at National University of Science and Technology (NUST) Pakistan in May, 2004.
Conference Publications
  1. Thiago M. de Moraes, Arturo A. Gonzalez, M. Danish Nisar, Eiko Seidel. "QoS-aware Resource Allocation for In-band Relaying in LTE-Advanced", received "Best Paper Award" in the Eighth International Conference on Wireless and Mobile Communications, ICWMC 2012, Venice, Italy, June 2012.
  2. Guenther Liebl, Thiago M. de Moraes, Arturo A. Gonzalez, M. Danish Nisar. "Centralized Interference Coordination in Relay-Enhanced Networks", paper presented at the WCNC 2012 Workshop on 4G Mobile Radio Access Networks, April 2012.
  3. M. Danish Nisar. "Design and Implementation of a DS-CDMA based RAKE Receiver on TMS320 C6711 DSK and its Performance Analysis", in Eighth IEEE International Multi-topic Conference (INMIC) 2004 in Lahore, Pakistan, Dec, 2004.
  4. M. Danish Nisar, Wolfgang Utschick, Hans Nottensteiner and Thomas Hindelang. "On Channel Estimation and Equalization of OFDM Systems with Insufficient Cyclic Prefix", In 65th IEEE Vehicular Technology Conference VTC, April 2007 in Dublin, Ireland.
  5. M. Danish Nisar, Hans Nottensteiner and Thomas Hindelang. "On Performance Limits of DFT-Spread OFDM Systems", in Sixteenth IST Mobile Summit, July 2007 in Budapest, Hungary.
  6. M. Danish Nisar, Wolfgang Utschick, and Thomas Hindelang. "Robust 2-D Channel Estimation for Multi-Carrier Systems with Finite Dimensional Pilot Grid", In Proceedings of the International Conference on Acoustics, Speech & Signal Processing, ICASSP 2009, April 2009, Taiwan, pp 2685 - 2688.
  7. M. Danish Nisar, Hans Nottensteiner, and Wolfgang Utschick. "Iterative Suppression of Co-Channel Interference", In Proceedings of the Seventeenth European Signal Processing Conference, EUSIPCO, August 2009, Glasgow, Scotland, pp 461 -465.
  8. M. Danish Nisar and Wolfgang Utschick. Presentation "Robust Apriori Information Aware Equalizer Design", in 15th ITG–Fachgruppe "AngewandteInformationstheorie", München, April, 2010.
  9. M. Danish Nisar and Wolfgang Utschick. "Robust Turbo Equalization - A Minimax Perspective", in Proceedings of the Sixth International Symposium on Turbo Codes & Iterative Information Processing (ISTC), September 2010, Brest, France.
  10. M. Danish Nisar and Wolfgang Utschick. "Minimax Robust Power Allocation Over Parallel Communication Channels", in Proceedings of the Nineteenth European Signal Processing Conference (EUSIPCO‐2011), Barcelona, Spain, August 2011, pp 1633-1637.
  11. M. Danish Nisar and Mohamed-Slim Alouini. "Minimax Robust Power Split in AF Relays based on Uncertain Long-term CSI", in Proceedings of the 74th IEEE Vehicular Technology Conference (VTC, Fall 2011), San Fransisco, USA, September 2011.
  12. M. Danish Nisar, Volker Pauli, and Eiko Seidel. "Multi-RAT Traffic Steering – Why, when, and how could it be beneficial?", White paper published by Novel Mobile Radio Research GmbH, December 2011.
  13. AgisilaosPapadogiannis, et. al., and M. Danish Nisar. "Advanced Relaying Concepts for Future Wireless Networks", paper presented at the Future Network & Mobile Summit, July 2012.
  1. M Danish Nisar and RajarajanBalraj. “Radio communication devices and methods for controlling a radio communication device” Intel, 2015 – US Patent App. 14/801,872, International App. No. PCT/EP2007/059808, International Filing Date 17.07.2015, Publication Date 18.02.2016.
  2. M. Danish Nisar, H. Nottensteiner. “Method and receiving apparatus for estimating a channel in a communications system” Nokia Siemens Networks GmbH & CO. KG, 2008 – EPO, Pub. No. EP1903728.
  3. M. Danish Nisar, H. Nottensteiner. “Channel estimation selection between different schemes” Nokia Siemens Networks GmbH & CO. KG, 2008 – WIPO. Pub. No. WO/2008/034811, International Filing Date 18.09.2007.