Performance Evaluation for MIMO In Vivo WBAN Systems
Chao He, Yang Liu, Thomas P. Ketterl, Gabriel E. Arrobo, and Richard, D. Gitlin

TL;DR
This paper evaluates the performance of 2x2 MIMO in vivo WBAN systems using simulations, demonstrating improved capacity and reliability over SISO configurations, especially with strategic antenna placement around the human body.
Contribution
It provides a comprehensive performance analysis of MIMO in vivo WBAN systems using realistic human body models and compares different antenna placements for optimal performance.
Findings
2x2 MIMO outperforms SISO in capacity and FER.
Antenna placement significantly affects system performance.
Back and front body placements yield higher capacity.
Abstract
In this paper we present the performance evaluation for a MIMO in vivo WBAN system, using ANSYS HFSS and the associated complete Human Body Model. We analyzed MIMO system capacity statistically and FER performance based upon an IEEE 802.11n system model, with receiver antennas placed at various angular positions around the human body. We also analyzed MIMO system capacity with receiver antennas at the front of the body at various distances from transmitter antennas. The results were compared to SISO arrangements and we demonstrate that by using 2x2 MIMO in vivo, better performance can be achieved, and significantly higher system capacity can be achieved when receiver antennas are located at the back of the body and in front of the body.
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