CODE DIVISION MULTIPLE ACCESS PASSIVE OPTICAL NETWORK USING AN ERROR CORRECTION CODE, ESPECIALLY IN REFERENCE TO INCREASING A DATA RATE OF A SUBSCRIBER END, WHILE INCREASING THE NUMBER OF SUBSCRIBERS CONNECTED TO A SINGLE STAR

摘要

PURPOSE: A CDMA PON(Passive Optical Network) using an error correction code is provided to perform modulation/demodulation processes using an error correction code, and to control a wavelength of a subscriber end light source by using an error monitoring function, thereby reducing a signal quality deterioration caused by an optical bit interference noise. CONSTITUTION: Each of ONUs(100) inserts an error correction code into an upward signal while transmitting the upward signal, and controls a frequency of the upward signal by using a response to the error correction code transmitted from a central base station(200). The central base station(200) receives the code division-multiplexed upward signal to decode the multiplexed upward signal, includes an error counter of the error correction code of the upward signal in a downward signal for the ONUs(100), and transmits the downward signal.