An apparatus comprising: an antenna array comprising a plurality of antenna elements configured for receiving multiple input multiple output (MIMO) signals. The antenna array comprises at least a first subpart of the antenna array comprising a first subsection of the plurality of antenna elements. A second subpart of the antenna array comprises a second subsection of the plurality of antenna elements. An alignment of the antenna elements in the second subpart deviates substantially by 30°-60° from an alignment of the antenna elements in the first subpart.