排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
An Improved Technique for Suppression of Intrachannel Four-Wave Mixing in 40-Gb/s Optical Transmission Systems 总被引:1,自引:0,他引:1
This letter presents an efficient method for testing the efficiency of modulation techniques for countering the effects of intrachannel four-wave mixing by calculating the sum of all the contributors at a given resonance position (the position affected by the surrounding pulses). In addition to this method, we are proposing a modulation technique that shows a significant Q-factor improvement of up to 7.5 dB (depending on the number of spans and the phase sequence implemented) over the uncoded return-to-zero on-off keying. Although the implementation of this phase modulation technique is simple, it is still very efficient in extending the nonlinearity tolerance and enhancing the performance of a high-speed optical transmission system 相似文献
2.
Proposal to Achieve 1 Tb/s per Wavelength Transmission Using Three-Dimensional LDPC-Coded Modulation
Batshon H.G. Djordjevic I.B. Minkov L.L. Lei Xu Ting Wang Cvijetic M. 《Photonics Technology Letters, IEEE》2008,20(9):721-723
We propose a three-dimensional (3-D) low-density parity check (LDPC)-coded modulation scheme that enables optical transmission beyond 320 Gb/s in aggregate rate using currently available commercial components operating at 40 giga-symbols/s. The proposed scheme introduces significant performance improvement of up to 4.1 dB at a bit-error ratio of 10-9 over the corresponding two-dimensional scheme. In addition, by using LDPC-coded 1024-3D-constellation it is possible, at least in theory, to achieve beyond a total of 1-Tb/s transmission using transmission equipment operating at 100 giga-symbols/s, once it reaches the maturity of 40-Gb/s systems. 相似文献
3.
4.
Djordjevic I.B. Batshon H.G. Cvijetic M. Lei Xu Ting Wang 《Photonics Technology Letters, IEEE》2007,19(15):1163-1165
A turbo equalization scheme suitable for electronic polarization-mode dispersion compensation based on low-density parity-check coding and the Bahl-Cocke-Jelinek-Raviv (BCJR) equalizer is proposed. For reasonable BCJR equalizer complexity, the differential group delay of up to three bit-periods can be compensated. 相似文献
1