  The pursuit of higher data rates and efficient spectrum utilization in modern
communication technologies necessitates novel solutions. In order to provide
insights into improving spectral efficiency and reducing latency, this study
investigates the maximum channel coding rate (MCCR) of finite block length
(FBL) multiple-input multiple-output (MIMO) faster-than-Nyquist (FTN) channels.
By optimizing power allocation, we derive the system's MCCR expression.
Simulation results are compared with the existing literature to reveal the
benefits of FTN in FBL transmission.
