Comparison of OFDMA and GFDMA for Next-Generation PONs

被引：9

作者：

Saljoghei, Arsalan ^{[1
]}

Farhang, Arman ^{[2
]}

Browning, Colm ^{[1
]}

Perry, Philip ^{[1
]}

Marchetti, Nicola ^{[2
]}

Doyle, Linda E. ^{[2
]}

Barry, Liam P. ^{[1
]}

机构：

[1] Dublin City Univ, Sch Elect Engn, Dublin 9, Ireland

[2] Trinity Coll Dublin, CONNECT, Dublin, Ireland

来源：

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING | 2017年 / 9卷 / 12期

关键词：

GFDMA; Multiple access; OFDMA; PON; UPLINK; TRANSMISSION; SYSTEMS; DESIGN; FBMC;

D O I：

10.1364/JOCN.9.001064

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper examines and compares the use of orthogonal frequency division multiple access (OFDMA) and generalized frequency division multiple access (GFDMA) multicarrier formats in next-generation passive optical networks (PONs) through experimentation and numerical simulations. It is demonstrated that GFDMA presents a high resilience toward multiple access interference (MAI) compared to OFDMA at the uplink channel of a PON. Moreover, two methods are proposed for achieving synchronization in the uplink channel of PONs, enabling high spectral efficiency. These proposed methods can lead to the elimination of inter-ONU guard bands, and facilitate overlapping inter-ONU subcarriers, while eliminating the effects of MAI. Additionally, the performance of these multicarrier formats was analyzed in the downlink channel at a data rate of 15.6 Gb/s and a transmission span of 50 km where neglible performance penalty was observed.

引用

页码：1064 / 1073

页数：10

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