Your DSL service has nothing to do with the signal strength of the wireless network in your home. It could attribute to network speed, dropouts, performance, etc., but not wireless strength.
Wireless strength is all in the transmission power of the wireless access point (in this case, your router). Look for a router that has significantly greater range than your current router. It likely has more transmission power. Also look for a router that has external antennas and possibly one that has replaceable/optional higher powered antennae. You can also add wireless extenders in your home to increase the reliable coverage area. Lastly, if possible, move your cable modem and wireless access point to an area closer to the majority of your wireless devices.
Good luck!
TIC
Wireless strength is all in the transmission power of the wireless access point (in this case, your router). Look for a router that has significantly greater range than your current router. It likely has more transmission power. Also look for a router that has external antennas and possibly one that has replaceable/optional higher powered antennae. You can also add wireless extenders in your home to increase the reliable coverage area. Lastly, if possible, move your cable modem and wireless access point to an area closer to the majority of your wireless devices.
Good luck!
TIC