公开(公告)号：US10743201B2

公开(公告)日：2020-08-11

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 ,  H04L25/03 ,  H04J11/00

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.

公开(公告)号：US10038489B2

公开(公告)日：2018-07-31

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: H04W4/00 ,  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：US10122517B2

公开(公告)日：2018-11-06

申请号：US14982526

申请日：2015-12-29

Applicant: Ceva D.S.P. Ltd.

Inventor： Gideon Kutz ,  Noam Zach ,  Guy Keshet ,  Kfir Bezalel

IPC: H04L5/00 ,  H04W72/08 ,  H04W24/10 ,  H04W52/24 ,  H04B17/327 ,  H04J11/00 ,  H04L25/02 ,  H04W52/40 ,  H04B17/309 ,  H04B17/345

Abstract: Methods for RSRP estimation in LTE networks that perform interference cancellation are provided. In particular, a bias that is present during interference cancellation is account for in the RSRP estimation of a target cell.