| 摘要 |
FIELD: physics; communications. ^ SUBSTANCE: invention relates to communication networks and is meant for estimating a communication channel. In the method a first channel impulse response estimate (CIRE) having multiple channel taps is derived, for example by filtering initial CIREs obtained from received pilot-characters. A threshold parametre value is selected based on at least one criterion, which may relate to channel profile, operating SNR, number of channel taps, and so on. A second CIRE is derived by zeroing out selected ones of the channel taps in the first CIRE based on the threshold parametre value. The average energy of the channel taps may be determined, a threshold may be derived based on the average energy and the threshold parametre value, and channel taps with energy less than the threshold may be zeroed out. Memory may store threshold parametre values for different operating scenarios, and stored values may be selected for use based on the current operating scenario. ^ EFFECT: higher quality of communication channel estimation. ^ 26 cl, 6 dwg |
