| 摘要 |
PROBLEM TO BE SOLVED: To rightly set up a CPRI link by substituting a K28.5 code with another bit sequence when multiplexing N pieces of CPRI signals or a compressed CPRI signal, and disposing the K28.5 code of the remaining one CPRI signal or the compressed CPRI signal at the head of a hyper frame of the CPRI signal that is constituted by multiplexing.SOLUTION: A transmission system comprises: a transmission-side device by which, when multiplexing a plurality of digital RoF signals, substitution processing is performed for substituting bit sequences as many as a number subtracting 1 from a multiplex number with any other bit sequence than the bit sequence for frame synchronization, and outputting a result as one digital RoF signal; and a reception-side device which performs restoration processing, after the digital RoF signal is demultiplexed into a plurality of digital RoF signals, for restoring the other bit sequence than the bit sequence for frame synchronization that is substituted by the substitution processing of the transmission-side device, into the bit sequence for frame synchronization.SELECTED DRAWING: Figure 12 |
