Abstract: Provided is an OFDM receiver which extracts a time sync signal from a prefix having a symmetric structure. The OFDM receiver, according to exemplary embodiments of the present invention, generates the sync signal (e.g., start point) of a symbol by using only the MSB (e.g., sign bit) of the cyclic prefix of an OFDM symbol, reducing the overhead of a logic circuit for generating the sync signal of the symbol.
Abstract: Provided are a digital broadcasting transmitting/receiving apparatus and method. By converting content of a main-program to a stream, converting content of a sub-program forming a single digital broadcasting service through synchronization with the main-program by being subordinated to the main-program to a stream, generating program configuration information containing stream conversion information of the main-program and stream conversion information of the sub-program, multiplexing the converted main-program stream and the generated program configuration information and real-time transmitting the multiplexed signal, and transmitting the converted sub-program stream in non-real-time, various and new premium services with compatibility with existing digital broadcasting services can be provided to users.
Type:
Application
Filed:
April 30, 2008
Publication date:
February 12, 2009
Applicant:
Electronics and Telecommunications Research Institute
Inventors:
Byungjun Bae, Sung-Hoon Kim, Suk Hee Cho, Kug Jin Yun, Yong Tae Lee, Heung Mook Kim, Jong Soo Lim, Soo In Lee