Energy and spectral efficiency of leakage-based precoding for large-scale MU-MIMO systems
We study the capacity performance of signal-toleakage- and-noise ratio precoding scheme (SLNR-PS) for largescale multiuser multiple-inputmultiple-output systems.We derive capacity bounds of SLNR-PS when the number of base station antennas N is large. A trade-off between energy efficiency (EE) a...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/82923 http://hdl.handle.net/10220/40371 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | We study the capacity performance of signal-toleakage-
and-noise ratio precoding scheme (SLNR-PS) for largescale
multiuser multiple-inputmultiple-output systems.We derive
capacity bounds of SLNR-PS when the number of base station
antennas N is large. A trade-off between energy efficiency (EE)
and spectral efficiency (SE) is defined for the case of equal power
allocation. Based on this trade-off, the closed-form expressions
of optimal SE and optimal number of BS antennas for maximizing
EE are derived, respectively. In addition, we consider the
EE optimization problem under both maximum transmit power
and quality of service constraints. The energy-efficient power
allocation scheme is obtained to solve this optimization problem.
Numerical simulations verify the benefits of the proposed scheme. |
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