Patent ID: 8311009

Claim:
A method for generating a reference sequence matrix and mapping elements of the reference sequence matrix to a position of a reference signal used for channel estimation in a cellular telecommunication system, the method comprising: generating, by a transceiver, a matrix S N of dimension N×N having N orthogonal rows or columns, with N being a positive integer >3; generating, by the transceiver, a plurality of reference sequence matrices OS (k) , k=0, . . . , N−1, from the matrix S N ; and mapping, by the transceiver, elements of at least one of the reference sequence matrices to a position of a reference signal having predetermined locations in a two-dimensional time-frequency symbol space, wherein rows or columns of a kth reference sequence matrix OS (k) are based at least in part on a (k+1)th row or column of the matrix S N .