Patent ID: 8923318

Claim:
A Wireless communication distributed antenna system, comprising: an antenna unit comprising a plurality of antenna elements; and a radio network controller including: a selector arranged to select at least one of the antenna elements as serving antenna for communication with user equipment, a code allocator arranged to allocate a code for channel estimation support for said communication between the serving antenna and the user equipment, and a control unit arranged to control said communication based on the selected serving antenna and the allocated code, wherein the code allocator is arranged to assign the code to said user equipment and the control unit is arranged to control the serving antenna so as to transmit the code assigned to the user equipment, wherein the code allocator is further arranged to determine interference between communication channels to different pieces of equipment and to assign the same code to a plurality of pieces of equipment in consideration of said determined interference, and wherein the code selector unit is further arranged to determine an interference matrix that provides an expected level of interference between each pair of antenna elements included in the plurality of antenna elements.