Performance measurement of high-efficient OFDM based transmission system in commercial HFC network

Implementation and Field Trials of OFDM-Based Digital Video Broadcasting System in Commercial Broadcasting Network for Multichannel UHD Service

“…BCH can remove the error floor caused by the LDPC decoder of the receiver. FEC encoded bits are then mapped to quadrature amplitude modulation (QAM) symbols and are finally assigned to each subchannel for the OFDM symbol [7,12]. Next, a data slicer generates one or more slices of data PLP.…”

“…Finally, an L1 signaling block is transmitted into the preamble part of the frames for transmission information. This is related to the position of the data slice, which can be tuned to a data slice to be received at the receiver [7,12].…”

“…A receiver operating within a traditional 6 or 8 MHz TV tuner bandwidth can extract that part of the broad transmission signal that contains the desired service. This part consists of a data slice that never exceeds the traditional bandwidth of a receiver tuner [7,12,13]. Tables 1-3 show the use of the implemented transmitter.…”