Techniques for phase tracking to enable higher modulation orders in wireless communications
AssigneeQUALCOMM Incorporated
InventorsRonen Shaked, Assaf Touboul, Guy Wolf
Life of this patent
Estimating the term…
Abstract
Aspects described herein relate receiving a signal having a waveform including, within a symbol, resource elements for a physical downlink shared channel (PDSCH) and separate resource elements for multiple pilots to enable phase tracking, estimating, based on the multiple pilots, a channel response of the PDSCH, and removing, from the signal, a phase noise computed based on the channel response estimated for the PDSCH.
Claims26
A method for wireless communication at a user equipment (UE), comprising:
- receiving a signal having a waveform including, within a symbol, resource elements for a physical downlink shared channel (PDSCH) and separate resource elements for multiple pilots, wherein each of the multiple pilots corresponds to and enables phase tracking for a different data transmission portion of the PDSCH within the waveform;
- estimating, based on the multiple pilots, a channel response of the PDSCH;
- and
- removing, from the signal, a phase noise computed based on the channel response estimated for the PDSCH.
An apparatus for wireless communication, comprising:
- one or more memories;
- and
- one or more processors coupled with the one or more memories, wherein the one or more processors are configured to:
- receive a signal having a waveform including, within a symbol, resource elements for a physical downlink shared channel (PDSCH) and separate resource elements for multiple pilots to, wherein each of the multiple pilots corresponds to and enables phase tracking for a different data transmission portion of the PDSCH within the waveform;
- estimate, based on the multiple pilots, a channel response of the PDSCH;
- and
- remove, from the signal, a phase noise computed based on the channel response estimated for the PDSCH.
An apparatus for wireless communication, comprising:
- means for receiving a signal having a waveform including, within a symbol, resource elements for a physical downlink shared channel (PDSCH) and separate resource elements for multiple pilots to, wherein each of the multiple pilots corresponds to and enables phase tracking for a different data transmission portion of the PDSCH within the waveform;
- means for estimating, based on the multiple pilots, a channel response of the PDSCH;
- and
- means for removing, from the signal, a phase noise computed based on the channel response estimated for the PDSCH.
A non-transitory computer-readable medium, comprising code executable by one or more processors for wireless communications, the code comprising code for:
- receiving a signal having a waveform including, within a symbol, resource elements for a physical downlink shared channel (PDSCH) and separate resource elements for multiple pilots to, wherein each of the multiple pilots corresponds to and enables phase tracking for a different data transmission portion of the PDSCH within the waveform;
- estimating, based on the multiple pilots, a channel response of the PDSCH;
- and
- removing, from the signal, a phase noise computed based on the channel response estimated for the PDSCH.
Dependencies are inferred from the claim text.