Twenty Second National Conference on Communications : NCC 2016

Organized by: Department of Electronics and Electrical Engineering, IIT Guwahati & Joint Telematics Group of IITs and IISc. IIT Guwahati | 4-6 March 2016 | Guwahati, Assam

Conference Information

Call for Papers Program Schedule Planery Talks / Invited Talks / Tutorials Industry Sessions Oral/Poster Guidelines

Important Dates

 Final Submission Deadline :
 8 November 2015
 Last date for proposal for pre-conference tutorial and workshop :  1 November 2015
 Acceptance notification : 5 January 2016
 Last date for Camera ready paper submission :10th February 2016
Deadline for Author/Paper registration :28th February 2016

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Non-coherent Reception for Multiple Antenna Systems

Prof. Ranjan K. Mallik
Department of Electrical Engineering
Indian Institute of Technology Delhi
Hauz Khas, New Delhi 110016, India

Joint work with:

Ross D. Murch
Department of Electronic and Computer Engineering
The Hong Kong University of Science and Technology
Clear Water Bay, Kowloon, Hong Kong

Shiny Singh
Department of Electrical and Computer Engineering
Carnegie Mellon University, Pittsburgh, PA 15213, USA

Sanyam Mehra
The Boston Consulting Group (India) Private Limited
14th Floor, Nariman Bhavan, 227 Nariman Point, Mumbai 400021, India


A single-input multiple-output system (SIMO) employing multi-level amplitude-shift keying (ASK) and a multiple-input multiple-output (MIMO) spatial multiplexing system employing on-off binary ASK and two transmit antennas in flat Rayleigh fading with noncoherent reception are considered. For the SIMO system, the symbol error probability (SEP) is derived in closed form from the statistics of the maximum likelihood receiver decision variable. A method of determining the optimal signal amplitude levels that minimize the SEP subject to a total signal energy constraint is formulated. For high signal-to-noise ratio (SNR), the asymptotic SEP and the diversity order are also presented. It is found that at high SNRs, the optimal signal amplitude levels follow an approximately geometric progression; this is different from the case of levels in arithmetic progression. The improved error performance of ASK with optimal signal amplitude levels in comparison with that of ASK with levels in arithmetic progression is shown through numerical results. For the MIMO system with two transmit antennas, transmit correlation, and a diagonal precoder, the SEP, as a function of the signal amplitude levels and the effective precoder matrix, is obtained. At high SNRs, it is found that the SEP tends to reach saturation. The optimal precoder parameter that minimizes the saturation value of the SEP is obtained. Results show that the optimal precoder parameter is almost independent of the number of receive antennas when the number of receive antennas is large. It is also observed that the error performance of MIMO noncoherent reception is better than that of MIMO coherent reception with imperfect channel state information for a certain range of SNR.
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