Patent ID: 8374452

Claim:
A method for use in a base station in a wireless communication system for generating and transmitting an orthogonal frequency domain multiplexed (OFDM) signal comprising a plurality of subcarriers, wherein the base station includes a cell identification reference signal generator, a controller and transmitter circuitry, the method comprising the steps of: generating, by the cell identification reference signal generator, a cell identification reference signal; mapping, by the controller, the cell identification reference signal onto a set of subcarriers of the plurality of subcarriers of the OFDM signal; transmitting, by the transmitter circuitry, the OFDM signal including the cell identification reference signal wherein the cell identification reference signal is based on a GCL sequence with GCL sequence index selected from a set of GCL sequence indices such that any two GCL sequence indices in the set of GCL sequence indices are not adjacent.