Multiuser MIMO Downlink Made Practical: Achievable Rates with Simple Channel State Estimation and Feedback Schemes

We consider a MIMO fading broadcast channel and compute achievable ergodic rates when channel state information is acquired at the receivers via downlink training and explicit channel feedback is performed to provide transmitter channel state information (CSIT). Both “analog” and quantized (digital) channel feedback are analyzed, and digital feedback is shown to be potentially superior when the feedback channel uses per channel coefficient

• Type: Journal
• Year: 2007
• Where: CORR
• Authors: Giuseppe Caire, Nihar Jindal, Mari Kobayashi, Niranjay Ravindran
• Keywords: Channel Feedback, Channel State Information, CORR 2007, Education, Explicit Channel Feedback