Spectral efficiency of coded phase-shift keying for fiber-optic communication

被引：35

作者：

Kramer, G ^{[1
]}

Ashikhmin, A ^{[1
]}

van Wijngaarden, AJ ^{[1
]}

Wei, X ^{[1
]}

机构：

[1] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2003年 / 21卷 / 10期

关键词：

error correcting coding; optical signal detection; optical transmitters; phase-shift keying;

D O I：

10.1109/JLT.2003.817704

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Several optical modulation and detection schemes are compared by computing their spectral efficiencies over additive white Gaussian noise channels. The bandwidth savings of differential quadrature phase-shift keying (D-QPSK) over both direct-detection on-off keying and differential binary phase-shift keying suggest that D-QPSK can improve the reach and efficiency of wavelength-division multiplexing systems. To test the theory, Reed-Solomon and low-density parity-check forward error correction codes are designed and evaluated. The codes generally behave as expected, except that for D-QPSK the gains are hampered by the differential detector. It is further shown that neither multiple-symbol differential detection nor decision-feedback detection is attractive when using strong codes.

引用

页码：2438 / 2445

页数：8

共 27 条

[1] METHODS OF SOLVING NOISE PROBLEMS [J].