Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 16, Issue 8, Pages 5511-5524Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2017.2712604
Keywords
Symbol-level precoding; constructive interference; multiuser MISO channel; MQAM; multi-level modulation
Funding
- Fond National de la Recherche Luxembourg projects
- Smart Resource Allocation for Satellite Cognitive Radio
- Spectrum Management and Interference Mitigation in Cognitive Radio Satellite Networks (SeMiGod)
- SATellite SEnsor NeTworks for spectrum monitoring
- System and Method for Symbol-level Precoding in Multiuser Broadcast Channels [15186548.2]
Ask authors/readers for more resources
Symbol-level precoding is a new paradigm for multiuser multiple-antenna downlink systems aimed at creating constructive interference among transmitted data streams. This can be enabled by designing the precoded signal of the multiantenna transmitter on a symbol level, taking into account both channel state information and data symbols. Previous literature has studied this paradigm for Mary phase shift keying modulations by addressing various performance metrics, such as power minimization and maximization of the minimum rate. In this paper, we extend this to generic multi-level modulations, i.e., Mary quadrature amplitude modulation by establishing connection to PHY layer multicasting with phase constraints. Furthermore, we address the adaptive modulation schemes which are crucial in enabling the throughput scaling of symbol-level precoded systems. In this direction, we design the signal processing algorithms for minimizing the required power under per-user signal to interference noise ratio or goodput constraints. Extensive numerical results show that the proposed algorithm provides considerable power and energy efficiency gains, while adapting the employed modulation scheme to match the requested data rate.
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