Low complexity intercarrier interference (ici) compensation algorithm: cyclic block phase tracking reference signal (ptrs) sequence design
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJung-Fu CHENG, Mehrnaz AFSHANG, Stephen GRANT
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Abstract
A method, system and apparatus for low complexity intercarrier interference (ICI) compensation algorithms and cyclic block phase tracking reference signal (PTRS) sequence design are disclosed. According to one aspect, a method in a network node includes generating a PTRS, having a PTRS sequence that is configured to lower a complexity of an ICI compensation algorithm. According to another aspect, a method in a wireless device (WD) includes determining an ICI compensation algorithm based at least in part on a PTRS having a PTRS sequence, and applying the determined ICI compensation algorithm to compensate for ICI.
Claims23
A method in a transmitter of one of a network node and a wireless device, WD, the method comprising:
- determining a cyclic block phase tracking reference signal, PTRS, by cyclically extending a base sequence to enable a receiver of the PTRS to use an inter-carrier interference, ICI, compensation algorithm of a specified level of complexity;
- and
- transmitting the PTRS.
A transmitter for one of a network node and a wireless device, WD, the transmitter comprising:
- processing circuitry configured to determine a cyclic block phase tracking reference signal, PTRS, by cyclically extending a base sequence to enable a receiver of the PTRS to use an inter-carrier interference, ICI, compensation algorithm of a specified level of complexity;
- and
- a radio interface in communication with the processing circuitry and configured to transmit the PTRS.
-20. (canceled)
A method in a receiver of one of a network node and a wireless device, WD, the method comprising:
- receiving a phase tracking reference signal, PTRS;
- determining intercarrier interference, ICI, filter coefficients based at least in part on a circulant matrix of known PTRS, sequences, a PTRS being formed by cyclically extending a base sequence;
- and
- applying a filter having the determined ICI filter coefficients to the received PTRS.
-28. (canceled)
A receiver for one of a network node and a wireless device, WD, the receiver comprising:
- a radio interface configured to receive a phase tracking reference signal, PTRS;
- and
- processing circuitry in communication with the radio interface and configured to:
- determine intercarrier interference, ICI, filter coefficients based at least in part on a circulant matrix of known phase tracking reference signal, PTRS, sequences, a PTRS being formed by cyclically extending a base sequence;
- and
- apply a filter having the determined ICI filter coefficients to a received PTRS.
-36. (canceled)
Dependencies are inferred from the claim text.