Antenna Spacing E ects on Indoor MU-MIMO Channel Capacity
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Date
2016-04
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Addis Ababa University
Abstract
In theory, multi-user MIMO is more immune to most of propagation limitations
plaguing single-user MIMO (SU-MIMO) systems, such as channel rank loss or an-
tenna correlation. However, in this thesis work, it has been considered the e ect of
antenna spacing on indoor multi-user MIMO sum-rate channel capacity at BS (base
station) and user separation at UE (user equipment) side.
This can be analyzed by using correlation based-analytical approximation method,
and its simulation results. These simulation results were obtained using MATLAB
simulation tools. The simulation result shows the comparison of correlated MU-
MIMO sum-rate channel capacity for all scenarios considered with non-correlated
stochastic channel capacity.
Based on the result obtained it is better to use antenna spacing above 1
2 (half-
carrier wave length) to get optimum correlated sum-rate channel capacity in in-
door LOS compared to uncorrelated iid gaussian non-fading channel. In non-line of
site(NLOS) MU-MIMO BC, antenna spacing from 1
5 to 1
2 is enough to get better
sum-rate channel capacity than other correlated channel compared to uncorrelated
Rayliegh fading channel capacity. Similarly, using Ricean fading channels, it is bet-
ter to use antenna spacing above 1
2 to get optimum sum-rate channel capacity.
KEY WORDS: MU-MIMO, Indoor Scenario, Antenna Spacing, User separa-
tion, Sum-Rate Channel Capacity
Description
Keywords
MU-MIMO, Indoor Scenario, User separa- tion, Sum-Rate Channel Capacity