摘要:
Provided is a system for transmitting broadcasting data. The broadcasting data transmission system may transmit broadcasting data using a plurality of transmit antennas and a plurality of receive antennas. A broadcasting data transmission apparatus included in the broadcasting data transmission system may differently determine a modulation scheme with respect to each of the transmit antennas, may differently determine a transmission power of each data stream based on the determined modulation scheme, and may differently determine a precoding vector.
摘要:
A digital multimedia broadcasting transmitting apparatus includes: a variable spreader (120) that spreads a pilot signal to a frequency domain and outputs a signal having a format where the pilot signal is partially inserted to the entire subcarriers; a modulator (130) that modulates the output of the variable spreader (120); and an antenna (140) that transmits the signal modulated by the modulator (130).