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US 2020/0028617 A1Published application
Using lattice reduction for reduced decoder complexity
AssigneeQUALCOMM Incorporated
InventorsShay Landis, Igor Gutman, Assaf Touboul
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AssigneeQUALCOMM Incorporated
InventorsShay Landis, Igor Gutman, Assaf Touboul
Estimating the term…
Methods, systems, and devices for wireless communications are described. Some wireless communications systems may utilize beamforming techniques to process wireless communications transmitted in millimeter wave (mmW) frequency ranges. In such cases, a user equipment (UE) may perform lattice reduction (LR)-based preprocessing for a received resource element (RE), which allows the UE to utilize demapping techniques (e.g., minimum mean square error (MMSE)-based demapping techniques or successive interference cancellation (SIC) demapping techniques) that are less computationally-complex than conventional demapping techniques (e.g., maximum likelihood (ML)-based demapping techniques) while providing a similar performance as conventional techniques. Further, due to mmW systems' robustness to time-dispersion, the UE may apply the same LR to multiple REs across multiple symbols in the time domain and across multiple sub-carriers in the frequency domain. The computational cost of performing the LR calculation may be spread across multiple REs and further increase the efficiency of utilizing low-complexity demapping techniques.
A method for wireless communication at a wireless device, comprising:
An apparatus for wireless communication at a wireless device, comprising:
An apparatus for wireless communication at a wireless device, comprising:
A non-transitory computer-readable medium storing code for wireless communication at a wireless device, the code comprising instructions executable by a processor to:
Dependencies are inferred from the claim text.