Performance Analysis of Precoding Techniques for 5G Massive MIMO and Wireless Systems
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Date
2018-10
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Addis Ababa University
Abstract
Due to that wireless technology improvement is ongoing, the numbers of users
and applications increase rapidly. Then wireless communications need the high
data rate and link reliability at the same time. Future generation wireless communication
will have to deal with some core requirements for serving a large number
user simultaneously, upholding high throughput for each user, assuring less energy
consumption, etc.
In practice, the interuser interference has impact when more users access to the
wireless link. Complicated transmission techniques such as interference cancellation
should be used to maintain a given desired quality of service. Due to these
problems, Massive MIMO with very large antenna arrays are proposed.
Massive MIMO is one of these promising technologies which have introduced
the concept of using hundreds or thousands of antennas at the base station and
serving tens or hundreds of user simultaneously. A massive number of antennas
will help to concentrate the radiated energy into smaller region hence will improve
the throughput and energy efficiency of the system.
In this paper, we have investigated the performance of a massive MIMO system
utilizing different precoding techniques (e.g. MMSE, ZF, MRT) under Rayleigh
fading channel with both complete and incomplete channel state information at
the transmitter (CSIT).
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Keywords
MIMO, Massive MIMO, Precoding, MMSE, ZF, MRT, Rayleigh, Capacity, CSIT