公开(公告)号：US20200304259A1

公开(公告)日：2020-09-24

申请号：US16619426

申请日：2018-06-22

Applicant: Nokia Technologies Oy

Inventor： Tero IHALAINEN ,  Kari PAJUKOSKI ,  Youngsoo YUK

IPC: H04L5/00 ,  H04B7/26 ,  H04B7/0413 ,  H04W72/04

Abstract: Systems, methods, apparatuses, and computer program products relating to phase tracking reference signal (PT-RS) design, for example, for discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM), are provided. One method may include forming, by a network node, a phase tracking reference signal (PT-RS) sample sequence using outer-most constellation points corresponding to scheduled modulation order of data channel, and scrambling the phase tracking reference signal (PT-RS) sample sequence with a user equipment-specific sequence.

公开(公告)号：US20210367815A1

公开(公告)日：2021-11-25

申请号：US16637689

申请日：2017-08-11

Applicant: Nokia Technologies Oy

Inventor： Tero IHALAINEN ,  Kari PAJUKOSKI ,  Toni LEVANEN ,  Ville SYRJÄLÄ

IPC: H04L25/03 ,  H04L27/26

Abstract: An inter-carrier interference method comprises: receiving one or more OFDM signal comprising plural blocks of OFDM subcarriers of a first type and plural blocks of OFDM subcarriers of a second type, wherein the frequencies of the subcarriers of each block of OFDM subcarriers of the first type are contiguous and wherein the plural blocks of subcarriers of the first type are distributed amongst the plural blocks of subcarriers of the second type; for each of the plural blocks of subcarriers of the first type, estimating inter-carrier interference components; estimating inter-carrier interference components for the subcarriers of the second type using the inter-carrier interference components estimated for the plural blocks of subcarriers of the first type; and compensating for inter-carrier interference in the plural blocks of subcarriers of the second type using the inter-carrier interference components estimated for the sub-carriers of the second type, thereby to generate plural compensated blocks of subcarriers of the second type.