Verfahren und Vorrichtungen zur Kanalschätzung für Mobilsysteme ungenügender zyklischer Präfixlänge

Ein Verfahren zum Schätzen eines Kanals für Mobilsysteme mit ungenügender zyklischer Präfixlänge, wobei der Kanal eine Vielzahl von Mehrwegekomponenten A method of estimating a channel for mobile systems with insufficient cyclic prefix length, wherein the channel comprises a plurality of multipath components (α,τ), includes: receiving a signal (yn) comprising a plurality of contributions of a transmit signal (xn[k], xn-1[k]) transmitted during a plurality of transmission time intervals (n, n-1) on a plurality of sub-carriers of known pilots (k∈Pb) and a plurality of sub-carriers of unknown data (k∉Pb); determining an estimate of the plurality of multipath components (α,τ) based on a probabilistic relation between the plurality of first contributions (xn[k], xn-1[k]) of the transmit signal, wherein the plurality of first contributions are transmitted during adjacent transmission time intervals (n, n-1), and an observation of the received signal (yn[k]) at a subcarrier (k∈Pb) of the known pilots, wherein the probabilistic relation is based on statistical properties of the plurality of first contributions (xn[k], xn-1[k]) of the transmit signal.