公开(公告)号：US20180136935A1

公开(公告)日：2018-05-17

申请号：US15352598

申请日：2016-11-16

Applicant: Ceva D.S.P. Ltd.

Inventor： Hagay ROZIN ,  Jeffery Allan (Alon) JACOB (YAAKOV)

IPC: G06F9/30

CPC classification number: G06F9/30032 ,  G06F9/3001 ,  G06F9/30036 ,  G06F9/30116 ,  G06F9/30134

Abstract: A system and method for performing sample rate conversion by an execution unit, including receiving an instruction, where the instruction comprises an irregular shifting pattern of data elements stored in a vector register, and shifting the data elements in the vector register according to the irregular shifting pattern. In case of upsampling the irregular shifting pattern includes an indication stating whether a memory element loads a data element from an immediate next memory element or from a second next memory element. In case of downsampling the irregular shifting pattern includes an indication stating whether a memory element in the input vector register loads a data element from an immediate next memory element, or whether the memory element loads a data element previously stored in a shadow vector register and the data element stored in the immediate next memory element is loaded into the shadow vector register.

公开(公告)号：US20180191420A1

公开(公告)日：2018-07-05

申请号：US15399156

申请日：2017-01-05

Applicant: Ceva D.S.P. Ltd.

Inventor： Gideon KUTZ ,  Hagay ROZIN ,  Zeev KAPLAN ,  Jeffrey Allan (Alon) JACOB (YAAKOV)

IPC: H04B7/06 ,  H04B7/0417

CPC classification number: H04B7/0697 ,  H04B7/0413 ,  H04B7/0417 ,  H04J11/0053

Abstract: Systems and methods for adaptive demodulation of cellular device communications signals are provided. Cellular communications over a Long Term Evolution network can involve determining a demodulations scheme based on a service cell transmission mode, an interfering cell transmission mode, a modulation order (QAM) of interferer and an interference-to-noise ratio of cellular communications signals.

公开(公告)号：US20180213423A1

公开(公告)日：2018-07-26

申请号：US15414652

申请日：2017-01-25

Applicant: Ceva D.S.P. Ltd.

Inventor： Gideon KUTZ ,  Hagay ROZIN ,  Zeev KAPLAN ,  Kfir BEZALEL ,  Jeffrey Allan (Alon) JACOB (YAAKOV)

IPC: H04W24/10 ,  H04L27/34 ,  H04B15/00 ,  H04L5/00

Abstract: Joint demodulation of a desired transmission and an interfering transmission received from an interfering cell with an unknown combination of transmission parameters is performed. For each subcarrier, an exhaustive search for the serving cell symbols and projection for the interfering cell symbols is performed for tested hypotheses of the interfering cell, by minimizing a whitened noise parabola for each combination of searched hypothesis and hyper constellation point of the serving cell. A constellation point for the interfering cell that is closest to the minimum point of the parabola is selected, where coefficients of the parabola are calculated once for each subgroup of four modulation types of the interfering cell. A measure of likelihood for each of the tested hypotheses is calculated. A cumulative measure of likelihood for each of the tested hypotheses is calculated, and the most likely hypothesis is selected based on the cumulative measure of likelihood.