System and method for channel status information feedback in a wireless communications system that utilizes multiple-input multiple-output (MIMO) transmission

摘要

A method for user equipment UE operation in a wireless communication system, the method comprising determining channel state information CSI at the UE, computing an error in the CSI and transmitting a measure of the error to a base station is disclosed.
A method for base station operation in a wireless communication system comprising receiving at said base station an error measure and information for a quantized estimate of a channel from a user equipment UE and reconstructing said channel at said base station by applying said error measure to said quantized estimate to derive a channel vector between said base station and said UE is also disclosed. Corresponding mobile device, base station and MIMO system are also disclosed.