Patent ID: 7356008

Claim:
A method of assigning at a transmitter of a Multi-Carrier transmission network spreading sequences to users of the Multi-Carrier transmission network, each element of each spreading sequence being multiplied by a data item to be transmitted and then transmitted to a respective user on a corresponding sub-carrier, comprising: obtaining spatial information for each user of the Multi-Carrier transmission network, ordering the users according to the obtained spatial information from a smallest direction of departure/arrival to a largest direction of departure/arrival to produce a respective user order, and assigning one of a group of corresponding ordered spreading sequences to each user according to the user's respective order so that an ordered spreading sequence is assigned to a user having a smallest direction of departure/arrival, a next ordered spreading sequence is assigned to a user have a next smallest direction of departure/arrival, and a last ordered spreading sequence is assigned to a user having a largest direction of departure/arrival.