|Wireless is getting deactivated whenever i power cycle the modem,|
What you're saying here is in effect, "Hey, every time I turn off the light switch in my room, it gets dark"
Think about this logically. If you shut your wireless router off, then of course the wireless network will disappear.
Stop cycling the power on the router and your problem should go away.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.