Methods and devices for channel estimation for mobile systems of insufficient cyclic prefix length

A method of estimating a channel for mobile systems with insufficient cyclic prefix length, wherein the channel comprises a plurality of multipath components, the method comprising:

• receiving a signal comprising a plurality of contributions of a transmit signal transmitted during a plurality of transmission time intervals on a plurality of sub-carriers of known pilots and a plurality of sub-carriers of unknown data;
• determining an estimate of the plurality of multipath components based on a probabilistic relation between a plurality of first contributions of the transmit signal, wherein the plurality of first contributions are transmitted during adjacent transmission time intervals, and an observation of the received signal at a subcarrier of the known pilots,
• wherein the probabilistic relation is based on statistical properties of the plurality of first contributions of the transmit signal.

A channel estimation device, comprising:

• a receive terminal configured to receive a signal comprising a plurality of contributions of a transmit signal transmitted during a plurality of transmission time intervals on a plurality of sub-carriers of known pilots and a plurality of sub-carriers of unknown data;
• a processing circuit configured to determine an estimate of a plurality of multipath components based on a probabilistic relation between a plurality of first contributions of the transmit signal, wherein the plurality of first contributions are transmitted during adjacent transmission time intervals, and an observation of the received signal at a subcarrier of the known pilots,
• wherein the probabilistic relation is based on statistical properties of the plurality of first contributions of the transmit signal.