I live in a 100 year old apartment building that has very thick stucco walls and lath board. My place of dwelling is 120 feet as you walk through the building to a bedroom where I would like to pick up an internet signal. I have purchased a signal booster for the wireless router I have but it interferes with the other tablets picking up the signal and nobody can really use their devices effectively. Is there a good router that can transmit effectively through all of this wall covering that 3 desktop computers and several tablets could receive a signal better than one or two bars? One of the computers sits right next to the existing router, and it works fine, whereas the other devices are located remotely in other locations in the building. Thank you.