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。

公开(公告)号：US11892556B2

公开(公告)日：2024-02-06

申请号：US17554364

申请日：2021-12-17

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyung Jung Kim ,  Min Soo Kang ,  Sang In Cho

IPC: G01S7/28 ,  G01S13/42 ,  G01S13/933

CPC classification number: G01S7/2813 ,  G01S13/428 ,  G01S13/933

Abstract: Disclosed is a method and apparatus for generating a radar signal, in which performance of radar detection is ensured while increasing a spectrum efficiency in a radar network. The method comprises generating a set of frequency-modulation waveforms, generating an orthogonal code set, generating a set of coded frequency-modulation waveforms through element operation between the set of frequency-modulation waveforms and the orthogonal code set, calculating an objective function for the set of frequency-modulation waveforms with regard to a different set of coded frequency-modulation waveforms and previous sets of coded frequency-modulation waveforms, and selecting a current polyphase code set as an optimized polyphase code set when a result of current calculation is better or smaller than a result of previous iteration, and performing phase perturbation by replacing an element randomly selected in the current polyphase code set selected as the optimized polyphase code set with another admissible-phase element.