Publications

Journal Articles (28)

• Alok K. Sinha, Saif K. Mohammed, P. Raviteja, Y. Hong and E. Viterbo, ``OTFS Based Random Access Preamble Transmission For High Mobility Scenarios,'' IEEE Transactions on Vehicular Technology, vol. 69, no. 12, Dec. 2020.
• Jinu Jayachandran, Kamal Biswas, Saif K. Mohammed and Erik G. Larsson, ``Efficient Techniques for In-Band System Information Broadcast in Multi-Cell Massive MIMO,'' IEEE Transactions on Communications, vol. 68, no. 10, Oct. 2020.
• Soumya P. Dash, Ranjan K. Mallik and Saif K. Mohammed, ``Performance Analysis of Coherent PLC With MPSK Signaling in Nakagami-m Noise Environment,'' IEEE Transactions on Vehicular Technology , Mar. 2020.
• Sudarshan Mukherjee, Alok Kumar Sinha and Saif K. Mohammed, ``Timing Advance Estimation and Beamforming of Random Access Response in Crowded TDD Massive MIMO Systems,'' IEEE Transactions on Communications , Feb. 2019.
• Amit Agarwal and Saif K. Mohammed, ``Rate Region of the ZF Precoder in a 2 x 2 Multiuser Optical IM/DD Channel,'' IEEE Transactions on Communications , Feb. 2019.
• Brijesh Chander Pandey and Saif K. Mohammed, ``A Low Latency Transmission Method for Massive MIMO Systems with Low Control Signaling Overhead,'' IEEE Transactions on Communications , Jan. 2019.
  
• Soumya P. Dash, Ranjan K. Mallik and Saif K. Mohammed, ``Error Analysis of Receive Diversity Noncoherent PLC System in Impulsive Noise Environment,'' IEEE Transactions on Vehicular Technology , vol. 68, no. 1, Jan., 2019.
• Venkatesh Khammammetti and Saif K. Mohammed, ``OTFS Based Mulitple-Access in High Doppler and Delay Spread Wireless Channels,'' IEEE Wireless Communication Letters , October 2018.
• Soumya P. Dash, Ranjan K. Mallik and Saif K. Mohammed, ``Performance Analysis of Noncoherent PLC with Multi-Level ASK in Impulsive Noise Environment,'' IET Communications , Jan., 2018.
• Amit Agarwal and Saif K. Mohammed, ``Achievable Rate Region of the Zero-Forcing Precoder in a 2 X 2 MU-MISO Broadcast VLC Channel with Per-LED Peak Power Constraint and Dimming Control,'' IEEE Journal of Lightwave Technology , vol. 35, no. 19, Oct., 2017.
• Sudarshan Mukherjee and Saif Khan Mohammed, ``How much Bandpass Filtering is Required in Massive MIMO Basestations,'' IEEE Transactions on Vehicular Technology , vol. 66, no. 5, May 2017.
• Sudarshan Mukherjee and Saif Khan Mohammed, ``Impact of Frequency Selectivity on the Information Rate Performance of CFO Impaired Single-Carrier Massive MU-MIMO Uplink,'' IEEE Wireless Communication Letters , vol. 5, no. 6, December 2016.
• Ranjan K. Mallik, Ross D. Murch, Soumya P. Dash and Saif K. Mohammed ,``Optimal Multi-Level ASK with Noncoherent Diversity Reception in Uncorrelated Non-Identical and Correlated Rayleigh Fading,'' (accepted) to appear in IEEE Transactions on Communications , March 2016.
• Saif K. Mohammed, Erik G. Larsson, ``Improving the Performance of the Zero-Forcing Multiuser MISO Downlink Precoder through User Grouping,'' IEEE Transactions on Wireless Communications , vol. 15, no. 2, Feb., 2016.
• Sudarshan Mukherjee and Saif K. Mohammed, ``Impact of CFO Estimation on the Performance of ZF Receiver in Massive MU-MIMO Systems,'' to appear in IEEE Transactions on Vehicular Technology , Jan., 2016.
• Sudarshan Mukherjee and Saif K. Mohammed, ``Constant-Envelope Precoding with Time-Variation Constraint on the Transmitted Phase Angles,'' IEEE Wireless Communication Letters , vol. 4, no. 2, April 2015.
• Antonios Pitarokoilis, Saif K. Mohammed and Erik G. Larsson, ``Uplink Performance of Time-Reversal MRC in Massive MIMO Systems subject to Phase Noise,'' IEEE Transactions on Wireless Communications , vol. 14, no.2, Feb., 2015.
  
• Saif K. Mohammed, ``Impact of Transceiver Power Consumption on the Energy Efficiency of Zero-Forcing Detector in Massive MIMO Systems,'' IEEE Transactions on Communications , vol. 62, no. 11, Nov. 2014.
  
• Saif K. Mohammed, Erik G. Larsson, ``Constant-Envelope Multi-User Precoding for Frequency-Selective Massive MIMO Systems,'' IEEE Wireless Communications Letters, vol. 2, no.5, pp. 547-550, October 2013.
  
• Saif K. Mohammed, Erik G. Larsson, ``Per-antenna Constant Envelope Precoding for Large Multi-User MIMO Systems,'' IEEE Transactions on Communications, vol. 61, no. 3, pp. 1059-1071, March 2013. Arxiv:1201.1634v2[cs.IT]
  
• Saif K. Mohammed, Erik G. Larsson, ``Single-User Beamforming in Large-Scale MISO Systems with Per-Antenna Constant-Envelope Constraints: The Doughnut Channel,'' IEEE Transactions on Wireless Communications, vol. 11, no. 11, pp. 3992-4005, Nov. 2012.
  
• A. Pitarokoilis, Saif K. Mohammed, E. G. Larsson, ``On the Optimality of Single-Carrier Transmission in Large Scale Antenna Systems,'' IEEE Wireless Communication Letters, vol. 1, no. 4, pp. 276-279, August 2012.
• Saif K. Mohammed, E. Viterbo, Y. Hong, A. Chockalingam, ``Modulation Diversity in Fading Channels with Quantized Receiver,'' IEEE Transactions on Wireless Communications, vol. 11, no.1, pp. 316-327, Jan. 2012.
• Saif K. Mohammed, E. Viterbo, Y. Hong, A. Chockalingam, ``Precoding by Pairing Subchannels to Increase MIMO Capacity with Discrete Input Alphabets,'' IEEE Transactions on Information theory, vol. 57, no. 7, pp. 4156-4169, July 2011.
• Saif K. Mohammed, E. Viterbo, Y. Hong, A. Chockalingam, ``MIMO Precoding with X- and Y-Codes,'' IEEE Transactions on Information theory, vol. 57, no. 6, pp 3542-3566, June 2011.
• R. Annavajjala, A. Chockalingam, Saif K. Mohammed, ``On a Ratio of Functions of Exponential Random Variables and some Applications,'' IEEE Transactions on Communications, vol. 58, no. 11, pp. 3091-3097, Nov 2010.
• Saif K. Mohammed, Ahmed Zaki, A. Chockalingam, and B. Sundar Rajan, ``High-Rate Space-Time Coded Large-MIMO Systems: Low-Complexity Detection and Channel Estimation,'' IEEE Journ. Sel. Topics in Signal Processing (JSTSP): Special Issue on Managing Complexity in Multiuser MIMO Systems, vol. 3, no. 6, pp 958-974, December 2009.
• K. Vishnu Vardhan, Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``A Low-Complexity Detector for Large MIMO Systems and Multicarrier CDMA Systems,'' IEEE JSAC Spl. Iss. on Multiuser Detection for Advanced Commun. Systems and Networks, vol. 26, no.3, pp. 473-485, April 2008.

Conference Publications (41)

• Rachit Mahendra, Saif K. Mohammed and Ranjan K. Mallik, ``Compensation of Receiver IQ Imbalance in mm-wave Hybrid Beamforming Systems,'' accepted for presentation in IEEE Vehicular Technology Conference (VTC2020-Fall), Nov. 2020.
• Rachit Mahendra, Saif K. Mohammed and Ranjan K. Mallik, ``Transmitter IQ Imbalance Pre-Compensation for mm-wave Hybrid Beamforming Systems,'' Proc. IEEE Vehicular Technology Conference (VTC2020-Spring), May 2020.
• Jinu Jayachandran, Kamal Biswas, Saif K. Mohammed and Erik G. Larsson, ``Efficient Techniques for In-Band System Information Broadcast in Multi-cell Massive MIMO,'' Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP' 2020), May 2020.
• Kamal Biswas, Saif K. Mohammed and Erik G. Larsson, ``Efficient Techniques for Broadcast of System Information in mmWave Communication Systems,'' Proc. 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications (SPAWC' 2018), June 2018.
• Amit Agarwal and Saif K. Mohammed, ``Impact of Underlaid Multi-antenna D2D on Cellular Downlink in Massive MIMO Systems,'' Proc. National Conference on Communications (NCC' 2018), Hyderabad, India.
• Soumya P. Dash, Ranjan K. Mallik and Saif K. Mohammed, ``Performance Analysis of a Gauss-Optimal Receiver for a Receive Diversity PLC System in Nakagami-m Noise Environment,'' Proc. National Conference on Communications (NCC' 2018), Hyderabad, India.
• Sudarshan Mukherjee and Saif K. Mohammed, ``Constant-Envelope Pilot Based Low-Complexity CFO Estimation in Massive MU-MIMO Systems,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2016), Washington D. C., USA.
• Soumya P. Dash, Ranjan K. Mallik and Saif K. Mohammed, ``Coherent Detection in a Receive Diversity PLC System Under Nakagami-m Noise Environment,'' Proc. IEEE Internation Symposium on Personal Indoor and Mobile Radio Communications (PIMRC' 2016), Valencia, Spain.
• Sudarshan Mukherjee and Saif K. Mohammed, ``Low Complexity CFO Estimation for Multi-User Massive MIMO Systems,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2015), San Diego, USA.
• Sudarshan Mukherjee and Saif K. Mohammed, ``Energy-Spectral Efficiency Trade-off for a Massive SU-MIMO System with Transceiver Power Consumption,'' Proc. IEEE International Conference on Communications (ICC' 2015) , London, U.K.
• A. Pitarokoilis, Saif K. Mohammed and E. G. Larsson, ``Achievable Rates of ZF Receivers in Massive MIMO with Phase Noise Impairments,'' Proc. Allerton Conference on Communication, Control and Computing (Allerton' 2013), Monticello, Illinois, USA.
• A. Pitarokoilis, Saif K. Mohammed and E. G. Larsson, ``Effect of Oscillator Phase Noise on Uplink Performance of Large MU-MIMO Systems,'' Proc. Allerton Conference on Communication, Control and Computing (Allerton' 2012), Monticello, Illinois, USA, October 1-5 2012.
• Saif K. Mohammed, E. G. Larsson, ``Constant Envelope Precoding for Power-Efficient Downlink Wireless Communication in Multi-User MIMO Systems using Large Antenna Arrays,'' Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP' 2012), Kyoto, Japan, March 2012.
• Saif K. Mohammed, E. G. Larsson, ``Power-Efficient Downlink Communication using Large Antenna Arrays: The Doughnut Channel,'' Proc. IEEE International Conference on Communications (ICC' 2012), Ottawa, Canada, June 2012.
• Saif K. Mohammed, E. G. Larsson, ``A low complexity user grouping based multiuser MISO downlink precoder,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2011), Houston, TX, USA, Dec. 2011.
• Saif K. Mohammed, E. Viterbo, Y. Hong and A. Chockalingam, ``Modulation Diversity in Fading Channels with Quantized Receiver,'' Proc. IEEE International Symposium on Information Theory (ISIT' 2011), St. Petersburg, Russia, 31 July - 5 Aug. 2011.
• Suresh C., Saif K. Mohammed, A. Chockalingam, ``On the Capacity of Quantized Gaussian MAC Channels with Finite Input Alphabet,'' Proc. IEEE International Conference on Communications (ICC' 2011), Kyoto, Japan, 5-9 June 2011. Available online at www.arxiv.org : arXiv:11022768v1 [cs.IT] 14 Feb. 2011.
• Saif K. Mohammed, E. Viterbo, Y. Hong, and A. Chockalingam, ``Precoding with X-Codes to Increase Capacity with Discrete Input Alphabets,'' Proc. IEEE International Symposium on Information Theory (ISIT' 2010), Austin, Texas, June 2010.
• Saif K. Mohammed, E. Viterbo, Y. Hong, and A. Chockalingam, ``X- and Y-Codes for MIMO Precoding,'' Proc. IEEE International Symposium on Information Theory (ISIT' 2010), Austin, Texas, June 2010.
• Saif K. Mohammed, E. Viterbo, Y. Hong, and A. Chockalingam, ``X-Codes: A Low-Complexity Full-Rate High-Diversity Achieving Precoder for TDD MIMO Systems,'' Proc. IEEE International Conference on Communications (ICC' 2010), Cape Town, South Africa, May 2010.
• Saif K. Mohammed, E. Viterbo, Y. Hong, and A. Chockalingam, ``X-Codes,'' International Zurich Seminar on Communications (IZS' 2010), Zurich, March 2010.
• N. Srinidhi, Saif K. Mohammed, and A. Chockalingam, ``A Reactive Tabu Search Based Equalizer for Severely Delay-Spread UWB MIMO-ISI Channels,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2009), Honolulu, USA, December 2009.
• N. Srinidhi, Saif K. Mohammed, A. Chockalingam, B. Sundar Rajan, ``Low-Complexity Near-ML Decoding of Large Non-Orthogonal STBCs using Reactive Tabu Search,'' Proc. IEEE International Symposium on Information Theory (ISIT' 2009), Seoul, Korea, June-July 2009.
• Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``Low-Complexity Near-MAP Decoding of Large Non-Orthogonal STBCs Using PDA,'' Proc. IEEE International Symposium on Information Theory (ISIT' 2009), Seoul, Korea, June-July 2009.
• Ahmed Zaki, Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``A Training-Based Iterative Detection/Channel Estimation Scheme for Large Non-Orthogonal STBC MIMO Systems,'' Proc. IEEE International Conference on Communications (ICC' 2009), Dresden, Germany, June 2009.
• Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``High-Rate Space-Time Coded Large MIMO Systems: Low-Complexity Detection and Performance,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2008), New Orleans, USA, December 2008.
• Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``Low-Complexity Detection and Performance in Multi-Gigabit High Spectral Efficiency Large MIMO Systems,'' Proc. IEEE Personal, Indoor and Mobile Radio Communications Symposium (PIMRC' 2008), Cannes, France, September 2008. \
• Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``A Low-Complexity Near-ML Performance Achieving Algorithm for Large MIMO Detection,'' Proc. IEEE International Symposium on Information Theory (ISIT' 2008), Toronto, Canada, July 2008.
• Saif K. Mohammed, K. Vishnu Vardhan, A. Chockalingam, and B. Sundar Rajan, ``Large MIMO Systems: A Low-Complexity Detector at High Spectral Efficiencies,'' Proc. IEEE International Conference on Communications (ICC' 2008), Beijing, China, May 2008.
• E. Gelal, K. Pelechrinis, I. Broustis, S. krishnamurthy, S. K. Mohammed, A. Chockalingam and S. Kasera, ``On the Impact of MIMO Diversity on Higher Layer Performance,'' accepted in The 30th International Conference on Distributed Computing Systems (ICDCS' 2010), Genoa, Italy, June 2010.
• Somsubhra Barik, Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``Full-rate Precoding in V-BLAST with Angle Parameter Feedback,'' Proc. IEEE Personal, Indoor and Mobile Radio Communications Symposium (PIMRC' 2009), Tokyo, Japan, September 2009.
• Saif K. Mohammed, A. Chockalingam, and B. Sundar Rajan, ``A Low-Complexity Precoder for Large Multiuser MISO Systems,'' Proc. IEEE Vehicular Technology Conference (VTC' 2008), Singapore, May 2008.
• Saif K. Mohammed, and A. Chockalingam, ``Multicode STBC in Frequency-Selective Fading,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2007), Washington, November 2007.
• K. Raghu, Saif K. Mohammed, and A. Chockalingam, ``A Distributed Approach to Interference Cancelation,'' Proc. IEEE Global Communications Conference (GLOBECOM' 2007), Washington, November 2007.
• Saif K. Mohammed, and A. Chockalingam, ``Detection of Multicode STBC Signals in Frequency Selective Fading,'' Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC' 2007), Athens, Greece, September 2007.
• Saif Khan Mohammed, Naveen K. Yanduru, ``Signal Distortion Due To Spectral Re-Growth of Adjacent Channel Interferers in WCDMA Receivers,'' IEEE Radio and Wireless Symposium (RWS' 2007), pp 559-562, Long Beach CA, USA, January 2007.
• Saif Khan Mohammed, Naveen K. Yanduru, ``Analysis and Measurement of Self Mixing of Transmitter Leakage in WCDMA Receivers,'' IEEE Radio and Wireless Symposium (RWS' 2007), pp 361-364, Long Beach CA, USA, January 2007.
• Saif Khan Mohammed, Naveen K. Yanduru, ``Analysis and Measurement of Cross Modulation Distortion in WCDMA Receivers,'' IEEE Asia Pacific Conference on Circuits and Systems (APCCAS' 2006), pp 1508-1511, Singapore, December 2006.
• Saif Khan Mohammed, Naveen K. Yanduru, ``Third Order Non Linear Distortion from Modulated Blockers in WCDMA Receivers,'' IEEE International Midwest Symposium on Circuits and Systems (MWSCAS' 2006), pp 473-476, San Juan, Puerto Rico, August 2006.
• Mohammed Saif Khan, Naveen Yanduru, ``Analysis of Signal Distortion due to Third Order Non-Linearity in WCDMA Receivers,'' IEEE International Symposium on Circuits and Systems (ISCAS' 2006), pp 5692-5695, Kos, Greece, May 2006.
• Mohammed Saif Khan, Naveen Yanduru, ``Analysis of Self Mixing of Transmitter Interference in WCDMA Receivers,'' IEEE International Symposium on Circuits and Systems (ISCAS' 2006), pp 5451-5454, Kos, Greece, May 2006.