Electronics and Telecommunications Research Institute

Yeon-Joon Chung

Sung-Hee Kim

Cheol-Hye Cho

Young-Il Kim

Young-Soo Park

Yong-Su Lee

Dae-Geun Park

Sun-Sim Chun

Won Geun Ryu

A technology is provided capable of improving the efficiency of an OFDM system by obtaining the performance in Bit Error Rate (BER) in a wireless communication using OFDM and determining the minimum FFT input bit that produces a SNR difference of 0.1 dB or below with respect to a theoretical BER graph at a desired performance.

Receiving apparatus and method for providing input bits of fast fourier transformer according to modulation

An apparatus and method for managing variable MBS zones in an MBS server are provided. The method variably sets an MBS zone based on a characteristic where user movement between MBS zones and content preference are changed depending on time and environment, and thereby enables a safer and faster shift of an MBS zone, thus effectively providing high-quality multimedia service in a mobile environment.

Apparatus and method for managing variable multicast and broadcast service zones in MBS server

A technology of setting up a MBS zone for providing a mobile IPTV service is provided in which the MBS zone is effectively managed, so that QoS is prevented from being degraded due to the handover delay that is caused by a MBS handover occurring when a user moves between MBS zones.

Method of setting up dynamic multicast and broadcast service zone for providing mobile internet protocol television service

Growing community of inventors

Daejeon-si, South Korea

Yeon-Joon Chung