Busy tone access control using low power non-license radio for wireless infrared CATV system

CATV networks are considered to be promising transmission channels which permit wide bandwidth and high quality data communications. However in the case of data communications, especially in apartment houses, the ingress noise in the up-link greatly degrades the transmission performance. So, by using a wireless infrared link instead of the last up-link of a network, the effects of ingress noise that was a problem can be decreased. However background light becomes a problem. To overcome this, we propose a new access control method using low power non-license radio for the wireless infrared CATV system. Through computer simulations, busy tone access control was proven to be effective in this system