Wireless option for rear surround speakers? 7.2.4

Hi all I run a 5.2.4 home theater but want to upgrade to 7.2.4 without having to run wiring to the rear. Is there a good option to add the surround back speakers that is wireless? I tried svs soundpath and that failed miserably. Connection issues and interference with my av processor's wifi. There doesn't seem to be many options that are on a dual broadband for example to get away from the 2.4ghz.