Patent ID: 8594582

Claim:
A receiver for a radio network, said receiver comprising a receiving unit for receiving a number of time domain signals forming a plurality of symbols, each symbol having a cyclic prefix, a channel estimation unit for determining a channel estimate (ĥ os ) in the time domain for a user (u) based on known pilots in the signals received by the receiving unit, wherein the channel estimation unit determines the channel estimate (ĥ os ) for a user (u) using a DFT matrix (V) with a fundamental period related to the number (N c ) of sub-carriers associated to said user (u), wherein the channel estimate (ĥ os ) has a length of L taps, L being less that the number (N c ) of sub-carriers associated to said user: wherein the channel estimation unit com rises a channel estimation part for estimating the channel estimate as ĥ os =V* N c ·k D* u R u ; wherein V* N c ·k is the conjugate transpose of a OFT matrix having a fundamental period of N c ·k; wherein D* u is the conjugate transpose of D u , which is a matrix comprising pilot symbols in the frequency domain corresponding to said user (u); wherein R u denote received samples in the frequency domain for said user (u): and wherein k is a constant.