An optical communication system comprising: a signal processing apparatus; and a wireless apparatus, the signal processing apparatus and the wireless apparatus realizing functions of a base station, a periodic symbol sequence comprising a cyclic prefix appended to a signal of a predetermined size to which an IFFT (Inverse Fast Fourier Transform) has been applied being transmitted between the signal processing apparatus and the wireless apparatus by means of digital RoF (Radio over Fiber) transmission, wherein the signal processing apparatus and the wireless apparatus each comprises a transmission unit and a reception unit, the transmission unit comprises: a first separation unit that acquires symbol information relating to a starting position of the symbol sequence and lengths of symbols constituting the symbol sequence and that equalizes the lengths of the symbols by separating a portion of the symbol sequence based on the acquired symbol information; and a compression unit that compresses symbols that are to be compressed from which the separated portion of the symbol sequence has been removed, and the reception unit comprises an expansion unit that expands the compressed symbols and restores the symbols, not all the symbols constituting the symbol sequence have the same length, the symbols constituting the symbol sequence includes a first symbol and second symbols, each of the second symbols has a same length which is shorter than the length of the first symbol, the optical communication system is characterized in that the first separation unit separates part of a cyclic prefix included in the first symbol so that the length of the first symbol from which the part of the cyclic prefix has been separated is equal to the length of each of the second symbols, the size of each unit of compression is a divisor of the length of each of the second symbols, and the compression unit compresses the symbols for each unit of compression based on the starting position so that each unit of compression does not include multiple symbols, the optical communication system further characterized in that the transmission unit further comprises a first multiplexing unit that multiplexes the separated portion of the symbol sequence with the compressed symbols, and the reception unit further comprises: a second separation unit that separates a portion of a multiplexed symbol sequence; and a second multiplexing unit that multiplexes the portion of the symbol sequence separated by the second separation unit with the symbols restored by the expansion unit, or the optical communication system further characterized in that the first separation unit discards the separated portion of the symbol sequence, and the reception unit further comprises a signal restoration unit that restores the portion of the symbol sequence discarded by the first separation unit. a first separation unit that acquires symbol information relating to a starting position of the symbol sequence and lengths of symbols constituting the symbol sequence and that equalizes the lengths of the symbols by separating a portion of the symbol sequence based on the acquired symbol information; and a compression unit that compresses symbols that are to be compressed from which the separated portion of the symbol sequence has been removed, and the reception unit comprises an expansion unit that expands the compressed symbols and restores the symbols, not all the symbols constituting the symbol sequence have the same length, the symbols constituting the symbol sequence includes a first symbol and second symbols, each of the second symbols has a same length which is shorter than the length of the first symbol, the optical communication system is characterized in that the first separation unit separates part of a cyclic prefix included in the first symbol so that the length of the first symbol from which the part of the cyclic prefix has been separated is equal to the length of each of the second symbols, the size of each unit of compression is a divisor of the length of each of the second symbols, and the compression unit compresses the symbols for each unit of compression based on the starting position so that each unit of compression does not include multiple symbols, the optical communication system further characterized in that the transmission unit further comprises a first multiplexing unit that multiplexes the separated portion of the symbol sequence with the compressed symbols, and the reception unit further comprises: a second separation unit that separates a portion of a multiplexed symbol sequence; and a second multiplexing unit that multiplexes the portion of the symbol sequence separated by the second separation unit with the symbols restored by the expansion unit, or the optical communication system further characterized in that the first separation unit discards the separated portion of the symbol sequence, and the reception unit further comprises a signal restoration unit that restores the portion of the symbol sequence discarded by the first separation unit.