公开(公告)号：US09867166B2

公开(公告)日：2018-01-09

申请号：US14478366

申请日：2014-09-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Hyun Hwang ,  Chang-Joo Kim ,  Myung-Sun Song ,  Jung-Sun Um

IPC: H04B3/10 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0406 ,  H04L5/0007 ,  H04L5/0048

Abstract: Provided is a method of generating a pilot pattern capable of perform adaptive channel estimation, and a method and apparatus of a base station and a method and apparatus of a terminal using the pilot pattern.The pilot pattern selects pilot symbol positions based on distances from pilots of previous orthogonal frequency division multiple access (OFDMA) symbols to a subcarrier position of a current OFDMA symbol in the frequency domain and the time domain, so that a low pilot density is maintained so as to effectively transmit data, and stable channel estimation performance can be obtained even in a bad channel environment.In addition, the minimum burst allocation size is determined according to the channel environment between the base station and the terminal, guaranteeing channel estimation performance suitable for the channel environment, and improving granularity, channel estimation latency, and channel estimation memory size.

公开(公告)号：US09294327B2

公开(公告)日：2016-03-22

申请号：US13965335

申请日：2013-08-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyung Jung Kim ,  Chang-Joo Kim ,  Jin Young Kim ,  Seung-Ho Choi

IPC: H04L27/26

CPC classification number: H04L27/2678 ,  H04L27/2666

Abstract: A method provides an identifying OFDM communication signal using OFDM symbol estimation. In view of the above, the present invention provides an apparatus and method for identifying an OFDM communication signal using an OFDM symbol estimation, which is capable of analyzing the OFDM signal with a high accuracy in a cognitive radio technique, thereby identifying the OFDM signal from a heterogeneous communication signal.

Abstract translation: 一种方法使用OFDM符号估计提供识别OFDM通信信号。 鉴于上述情况，本发明提供了一种使用OFDM符号估计来识别OFDM通信信号的装置和方法，其能够在认知无线电技术中以高精度分析OFDM信号，从而识别来自 异构通信信号。