High speed OFDM-CDMA optical access network

Abstract

We demonstrate the feasibility of a 16 × 3.75 Gb∕s (60 Gb/s aggregate) Orthogonal frequency division multiplexingcode division multiple access passive optical network for next-generation access applications. 3.75 Gb/s PON channel transmission over 25 km single-mode fiber shows 0.1 dB dispersion and 0.9 dB crosstalk penalties. Advantages of the system include high capacity, enhanced spectral efficiency, coding gain, and networking functions such as increased security and single-wavelength operation.

Performance analysis of AO‐OFDM‐CDMA with advanced 2D‐hybrid coding for amplifier‐free LR‐PONs

“…To maximise bit rates, we harness QAM-order modulation format (M) for each optical subcarrier (N s ) thus providing bit rates per N s of 40 Gb/s and up to 160 Gb/s. Table 3 exhibits the simulation parameters deployed for the numerical results of SNR, BER and Qfactor calculations, in particular for DFB transmitter, SSMF specification G.652 [20], APD specification [21] and CDMA code properties, respectively. Fig.…”