ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS-PASSIVE OPTICAL NETWORK COMPRISING OPTICAL NETWORK UNIT AND OPTICAL LINE TERMINAL

摘要

An orthogonal frequency division multiple access-passive optical network including a plurality of optical network units each configured to generate orthogonal frequency division multiplexed signals, which are allocated thereto, based on a central frequency for frequency division multiplexing that is allocated in advance, and to use the generated signals in upstream transmission.

主权项

1. An optical network unit of an orthogonal frequency division multiple access-passive optical network, the optical network unit comprising:
a digital signal processer configured to generate orthogonal frequency division multiplexing subcarriers that are allocated to the optical network unit within a baseband; a digital-to-analog converter configured to convert an orthogonal frequency division multiplexed signal having passed through the digital signal processor into an analog form; and an electrical IQ-modulator configured to perform a frequency up-shift on the orthogonal frequency division multiplexed signal, which is converted into the analog form for frequency division multiplexing that is allocated to each optical network unit.