Method and arrangement for mitigation of intercell interference in a cellular communication system

A 3GPP cellular communication between cells of the system and the intra-cell method for mitigation of interference 400, and a device, in a receiver in a cell of said system, comprising: a first channel transfer function for the first channel in the cell (A (1) deriving a signal representative of; for at least a second channel originating in a different cell, derive a cell-specific scrambling code (S), the channel impulse derived response (H), and for deriving a channelization code (C) on the basis of that, further comprising: deriving a signal (A (2, ... M) of a second channel transfer function; and using the first and second signals a multi-user detection performing a channel The code is unknown, alternative channelization code is preferably replaced. It will be appreciated that the technique can be applied to both the downlink and the uplink. This provides the advantage that the intra-cell interference and inter-cell interference mitigation all.