Patent ID: 7920537

Claim:
A method for mitigation of interference in a cellular communication system, comprising: in a receiver in a cell of a system, deriving for a first channel in the cell a first signal representative of a first channel transfer function; deriving for at least a second channel originating in a different cell a second signal representative of a second channel transfer function, wherein the second signal includes a first code and a second code, and deriving the second signal includes: deriving the first code, deriving a channel impulse response, deriving a training data sequence common to a plurality of channelisation codes associated with the different cell in response to receiving a cell identifier, and deriving the second code comprising a tentative code in place of determining an actual channelisation code used in the different cell from among the plurality of channelisation codes, wherein the tentative code has a lower spreading factor than the actual channelisation code to enable more computationally efficient multi-user detection when the training data sequence does not have a unique mapping with the actual channelisation code; and performing multi-user detection using the first signal and the second signal.