| 摘要 |
The present invention relates to a receiver for a radio network. The receiver com- prises a receiving unit and a channel estimation unit (18). The receiving unit is arranged to receive a number of time domain signals forming a plurality of symbols, each symbol having a cyclic prefix. The channel estimation unit is (18) arranged to determine a channel estimate ( h <SUB>os</SUB>) in the time domain for a user (u) based on known pilots in the signals received by the receiving unit, and to determine the channel estimate ( h <SUB>os</SUB>) for a user (u) using a DFT matrix (V) with a fundamental period related to a number (N<SUB>c</SUB>) of sub-carriers associated to said user (u), wherein the channel estimate ( h<SUB>os</SUB>) has a length of L taps, L being less that the number (N<SUB>c</SUB>) of sub-carriers associated to said user. The present invention also relates to a method for determining a channel estimate ( h <SUB>os</SUB>) for a radio channel. |
