Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9473180 | Apparatus for converting frequency and RF transmitter comprising same | Kyu Min KANG, Seung Keun PARK, Jae Cheol PARK | 2016-10-18 |
| 9467320 | Method and system for performing initial ranging in cognitive radio network | Sung Hyun Hwang, Sung Jin YOO, Byung Jang Jeong, Jae-Ick Choi | 2016-10-11 |
| 9288090 | Spectrum sensing method and spectrum sensing device | Hoi Yoon JUNG, Byung Jang Jeong, Jae-Ick Choi | 2016-03-15 |
| 9215661 | Transmission power control method and device for cognitive radio device | Sung Hyun Hwang, Gwangzeen Ko, Chang-Joo Kim, Myung Sun Song, Min-Sheo Choi | 2015-12-15 |
| 9210712 | Apparatus and method for controlling subcarrier spacing in a wireless communication system | Sung Hyun Hwang, Hoi Yoon JUNG, Gwang Zeen KO, Byung Jang Jeong, Chang-Joo Kim | 2015-12-08 |
| 9160432 | Cognitive radio base station and communication method thereof in multi-user multiple-input multiple output cognitive radio network system | Jae Hyun Park, Byung Jang Jeong, Sung Hyun Hwang, Hoi Yoon JUNG | 2015-10-13 |
| 9137053 | Apparatus and method of estimating channel in consideration of residual synchronization offset | Sung Hyun Hwang, Sung Jin YOO, Byung Jang Jeong, Myung Sun Song | 2015-09-15 |
| 8995409 | Communication method using a preamble to share characteristic information, method for generating the preamble, and communication system to which the methods are applied | Sung Hyun Hwang, Hoi Yoon JUNG, Byung Jang Jeong, Chang-Joo Kim, Gwang Zeen KO | 2015-03-31 |
| 8964886 | Method and device for transmitting a preamble in a wireless communication system | Sung Hyun Hwang, Sang Won Kim, Byung Jang Jeong, Chang-Joo Kim | 2015-02-24 |
| 8964640 | Hybrid beaconing method | Gwangzeen Ko, Moon-Won Lee, Sung-Jin You, Sung Hyun Hwang, Myung Sun Song +1 more | 2015-02-24 |
| 8861551 | Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereof | Sung Hyun Hwang, Chang-Joo Kim, Myung Sun Song | 2014-10-14 |
| 8855144 | Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereof | Sung Hyun Hwang, Chang-Joo Kim, Myung Sun Song | 2014-10-07 |
| 8787271 | Method and device for communication between devices with different transmission coverage | Gwangzeen Ko, Sung Hyun Hwang, Myung Sun Song, Chang-Joo Kim | 2014-07-22 |
| 8780940 | Method and apparatus for compressing frame | Sung-Jin You, Gwangzeen Ko, Moon-Won Lee, Myung Sun Song | 2014-07-15 |
| 8737498 | Secondary transmitter included in cognitive radio communication system and communication method of the secondary transmitter | Jae Hyun Park, Byung Jang Jeong, Sung Hyun Hwang, Hoi Yoon JUNG, Jin Suk PAK +2 more | 2014-05-27 |
| 8693410 | Method and apparatus of hybrid burst mapping in OFDMA systems | Sung Hyun Hwang, Myung Sun Song, Chang-Joo Kim, Gwangzeen Ko | 2014-04-08 |
| 8682257 | Method and apparatus for detecting heterogeneous communication system | Gwang Zeen KO, Sung-Jin You, Jin Suk PAK, Sung Hyun Hwang, Sang Won Kim | 2014-03-25 |
| 8619699 | Channel switching apparatus and method of a base station and channel switching apparatus and method of a terminal based on the cognitive radio system | Gwangzeen Ko, Sung-Jin You, Myung Sun Song, Sung Hyun Hwang, Chang-Joo Kim | 2013-12-31 |
| 8600418 | Relay station for cell information exchange between adjacent BSs over air links in cellular systems | Gwangzeen Ko, Chang-Joo Kim, Myung Sun Song, Sung Hyun Hwang, Sung-Jin You | 2013-12-03 |
| 8488526 | Network communication method and network device using preamble | Sung Hyun Hwang, Gwangzeen Ko, Myung Sun Song, Chang-Joo Kim | 2013-07-16 |
| 8477799 | Method for using flexible bandwidth in OFDMA-based cognitive radio system, base station and subscriber station using the same | Sung Hyun Hwang, Myung Sun Song, Yun-Hee Kim, Chang-Joo Kim, Gwangzeen Ko | 2013-07-02 |
| 8326336 | Apparatus and method for communication in cognitive radio network | Myung Sun Song, Chang-Joo Kim, Gwangzeen Ko, Sung Hyun Hwang, Sang Won Kim +1 more | 2012-12-04 |
| 7903691 | Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereof | Sung Hyun Hwang, Chang-Joo Kim, Myung Sun Song | 2011-03-08 |