Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 17, Issue 12, Pages 8022-8034Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2018.2873386
Keywords
Constant envelope; coarse quantization; constructive interference; downlink massive multi-user MIMO; preceding
Funding
- National Science Foundation [ECCS-1547155, CCF-1703635]
- Technical University of Munich Institute for Advanced Study
Ask authors/readers for more resources
Coarsely quantized massive multiple-input multiple-output (MIMO) systems are gaining more interest due to their power efficiency. We present a new preceding technique to mitigate the multi-user interference and the quantization distortions in a downlink multi-user MIMO system with coarsely quantized constant envelope (QCE) signals at the transmitter. The transmit signal vector is optimized for every desired received vector taking into account a relaxed version of the QCE constraint. The optimization is based on maximizing the safety margin to the decision thresholds of the receiver constellation modulation. Due to the linear property of the objective function and the constraints, the optimization problem is formulated as a linear programming problem. The simulation results show a significant gain in terms of the uncoded bit error rate compared to the existing preceding techniques.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available