Electronics and Telecommunications Research Institute

Cisc Semiconductor Design+consulting Gmbh

Nak Seon Seong

Cheol Sig Pyo

Heyung Sub Lee

Jong-Suk Chae

Su Na Choi

Hyunseok Kim

Jong Suk Chae

Jae Ick Choi

Ji-Hoon Bae

Sang Yeoun Lee

Seung Il Myong

Hoe-Sung Yang

Dong-Beom Shin

Tae Yune Lee

Di David Tschische

Di Josef Preishuber-Pfluegl

Di Alex Janek

Disclosed is a method of generating an activation code of a Radio Frequency Identification (RFID) tag including calculating K satisfying a condition that N is set to exceed 2and to be equal to or less than 2, when classifying N number of objects through a plurality of RFID tags; and classifying the N number of objects by recording a code corresponding to each of the N number of objects in a K-bit region in an activation code of each RFID tag.

Method of generating activation code for radio frequency identification tag

A multistage channel estimation method and apparatus is provided. The multistage channel estimation method includes: receiving a data frame to compensate for a distortion of the data frame based on a first channel estimation value associated with a corresponding section of the data frame; a first step of changing the corresponding section to calculate a second channel estimation value associated with the changed section; a second step of updating the first channel estimation value based on the calculated second channel estimation value; a third step of compensating for the distortion of the data frame based on the updated first channel estimation value to count a number of compensations; and repeating the first step through the third step, when the counted number of compensations does not match a predetermined numerical value.

Multistage channel estimation method and apparatus

Disclosed is a synchronization method between a reader and tag according to an example embodiment, the method including: transmitting, by the reader, a first write command message to the tag at a first time; detecting, by the tag, the first write command message from the reader at a second time and transmitting a first response message to the reader in response to the first write message; transmitting, by the reader, a second write command message including first time information of the first time to the tag; and correcting, by the tag, a clock offset using a difference between the first time and the second time.

Synchronization method between reader and tag

A horn antenna system having a strip line feeding structure of which size is reduced while cross polarized characteristics are kept. The horn antenna system, includes: a first horn antenna unit having a first horn antenna and a first ground made of metal, for radiating a signal; a second horn antenna unit having a second horn antenna and a second ground made of metal, for reflecting the signal to allow the second horn antenna unit to radiate the signal; and a feeding unit located between the first horn antenna unit and the second horn antenna unit, for feeding the energy to the first horn antenna unit and the second horn antenna unit, wherein the feeding unit is a stripe line.

Horn antenna system having a strip line feeding structure

Growing community of inventors

Daejeon, South Korea

Nak Seon Seong