Patent ID: 8559398

Claim:
A method for a terminal of a cellular telecommunication system, the telecommunication system enabling determination of broadcasted system information by the terminal from broadcasted system information from at least one cell operated by a network node of the telecommunication system, where the telecommunication system employs Orthogonal Frequency Division Multiple Access, the method comprising: receiving a transmission signal, comprising reference symbols and synchronisation symbols, from the network node of the at least one cell; determining at least one pre-coding vector, of which one pre-coding vector being associated with transmission by an at least one transmit antenna of the network node of the at least one cell, for the transmission signal; and estimating, for each of the at least one pre-coding vector, a channel estimate for all sub-carriers of the received transmission signal from the received reference symbols and a reference symbol channel model defined by reference symbols of the transmission signal, and from the synchronisation symbols, the at least one pre-coding vector and a synchronisation symbol channel model defined by synchronisation symbols of the transmission signal, wherein estimating the channel estimate comprises minimising mean square error for the channel estimate, when Ĥ is biased, Ĥ=KY, where Y are received symbols and K = [ I ⁢ ⁢ A H ] · ( [ I A ] ⁡ [ I ⁢ ⁢ A H ] + ∑ E ) - 1 where I is an identity matrix, A is the pre-coding vector, and Σ E is the noise covariance matrix.