公开(公告)号：US20220120884A1

公开(公告)日：2022-04-21

申请号：US17351654

申请日：2021-06-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Karthik SUBBURAJ ,  Karthik RAMASUBRAMANIAN ,  Shailesh JOSHI ,  Kameswaran VENGATTARAMANE ,  Indu PRATHAPAN

IPC: G01S13/04 ,  G01S7/35 ,  G06F17/14 ,  G06F16/22 ,  G06F16/901

Abstract: A system includes a memory configured to store a two-dimensional data structure that includes radar data arranged such that radar data of a first transmitter is separated from radar data of a second transmitter by a Doppler offset in the two-dimensional data structure. The system also includes a data fetch mechanism that includes a lookup table (LUT) applied on either of two dimensions. The lookup table is configured to store a data fetch location in the two-dimensional data structure, where the data fetch location indicates a location from which to fetch a subset of the radar data from the two-dimensional data structure and the data fetch mechanism is configured to fetch the subset of the radar data from the two-dimensional data structure based on the LUT. The system includes a processor configured to perform a fast Fourier transform (FFT) on the fetched subset of the radar data.

公开(公告)号：US20240288563A1

公开(公告)日：2024-08-29

申请号：US18654683

申请日：2024-05-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Karthik SUBBURAJ ,  Karthik RAMASUBRAMANIAN ,  Shailesh JOSHI ,  Kameswaran VENGATTARAMANE ,  Indu PRATHAPAN

IPC: G01S13/04 ,  G01S7/35 ,  G06F16/22 ,  G06F16/901 ,  G06F17/14

CPC classification number: G01S13/04 ,  G01S7/35 ,  G06F16/2264 ,  G06F16/9017 ,  G06F17/142

Abstract: Systems and instruction carrying non-transitory processor-readable mediums are provided to facilitate access of radar data that may be scattered or non-uniformly located within a region of memory for further processing of such radar data. An example system includes counters that increment on different dimensions of the memory region, a lookup table, multipliers, an adder, and a wraparound mechanism to access different sets of non-contiguously stored radar data from a region of memory. The wraparound mechanism performs a wraparound operation when a combined address, generated by the adder based on addresses obtained by the multipliers, is greater than a last valid address in the region. The wraparound operation generates a new combined address that is used to fetch data from the memory. A transform operation is then performed on the fetched data.