Estimating noise covariance from signal covariance for use in PBCH intercell interference cancellation in systems with two interfering cells

摘要

Signals including a PBCH (Physical Broadcast CHannel) are received from a wanted cell basestation and two interfering cell basestations. An estimate of the system noise covariance is derived from the signal covariance. The noise covariance estimate is used in the reduction of interference from the two interfering cells during recovery of the wanted PBCH. The cells may be heterogeneous (eg. a mixture of macro, pico and femto cells).