Experimental interference assessment between two independent and simultaneous 4 x 4 MIMO handset user links operating at 5 GHz

Analysis of simultaneous 4 ?? 4 MIMO channel measurements at 5 ?? GHz are discussed that evidence the impact of user interaction on mobile terminals that will significantly impact the signal to interference ratio between two users. Results indicate that branch power ratio on a mobile, which results from user interaction, will impact both its interference to other users but also its own signal to interference ratio. User interactions both in talk position and texting position are considered.