Patent ID: 8897339
Filing Date: 2014-11-25
Classification: H04B

Abstract:
1. A method of increasing impairment co-variance matrix R u estimation accuracy in downlink in a user equipment in a communication network system comprising a plurality of communication network nodes communicating with one or more user equipments, where each network node is serving at least one cell in which one or more user equipments are located, the method comprising the steps of: performing de-spread on high speed-downlink channel symbols to form a matrix X of de-spread symbols; using the matrix X of de-spread symbols and channel estimates h using the matrix X of de-spread symbols and the channel estimates h repeating the use of the matrix X of de-spread symbols and the channel estimates h using the matrix X of de-spread symbols and the matrix S of recovered symbols in hard value with increased estimation accuracy to form an impairment co-variance matrix R using the impairment co-variance matrix R