Patent ID: 8873683
Filing Date: 2014-10-28
Classification: H04B,H04J

Abstract:
1. A method of estimating interference and noise in a multiple input multiple output (MIMO) receiver of a user equipment (UE), comprising: receiving a signal at the UE comprising a first reference signal transmitted from a first antenna port, the first antenna port being allocated to the UE; despreading and descrambling the signal using a spreading code associated with the first antenna port and a scrambling sequence assigned to the UE, thereby generating a first antenna port signal; despreading and descrambling the signal using a spreading code associated with a second antenna port and the scrambling sequence assigned to the UE, the second antenna port being unallocated to the UE, thereby generating a second antenna port signal; performing channel estimation using a channel estimator of the first antenna port based on the first antenna port signal, thereby generating a channel estimate relating to the first antenna port; and estimating an interference and noise covariance measure based on the first antenna port signal, the channel estimate and the second antenna port signal.