feature: MAC - Implement Down-Up simulation for our MAC design
1. Add fcn_MAC_DU for Down-UP simulation
2. Modify main file to add simulation
feature: MAC - Add plot figure for MAC
Merge branch 'feature_MAC' into develop
feature: Rate - Add estimate SINR information
feature: rate - Add functions for rate model
Merge branch 'feature_rate' into release_MAC
feature: History - Add reference of history data of our approach
Merge branch 'feature_history' into release_MAC
feature: Rate - Modify rate calculate formula and add snr to BER file
feature: rate - modify rate decide mechanism
feature: rate - Modify bit error rate into packet error rate, add snrtable, modify rate calculate function
feature: Rate - Modify rate calculate
Merge branch 'feature_rate' into release_MAC
feature: Power - Add power control function fcn_MAC_Power_Fair_DU.m
feature: Power Control - Add perfect and historical approach
feature: PowerControl - Add power constraint and power cdf code(Commented)
feature: Power Control - Change channel model and modify rate calculate function
feature: Power Control - Add plot function for power control
feature: Power control - Modify rate calculate function and plot function
feature: Power control - Add unfair strategy for power control, and modify rate to kbit from byte