ZTE TX

Morristown, NJ, United States
Morristown, NJ, United States
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Li F.,ZTE TX | Li F.,Jinan University | Cao Z.,Hunan University | Yu J.,ZTE TX | Li Z.,Jinan University
Optics InfoBase Conference Papers | Year: 2016

In this paper, we review and discuss our recent efforts on transmission of 400+ Gbit/s POLMUX-OFDM with coherent detection. Spectrum efficiency can be improved with the use of advanced DSP employed on high-order modulation formats. © OSA 2016.


Li F.,Hunan University | Zhang J.,ZTE TX | Zhang J.,Fudan University | Cao Z.,TU Eindhoven | And 6 more authors.
Optics Express | Year: 2013

Quad-Carrier Quadrature Phase Shift Keyed orthogonal frequency division multiplexing (QPSK-OFDM) signal transmission and reception is successfully demonstrated with blind equalization like a 25-ary quadrature amplitude modulation (25-QAM) signal with cascaded multimodulus algorithm (CMMA) equalization. The phase recovery can be realized with simple Viterbi algorithm and the frequency offset estimation (FOE) should be done with 25-QAM signal before 4-point fast Fourier transform (FFT). 48-Gbit/s Quad-Carrier QPSK-OFDM signal is successfully transmitted over 80-km SMF-28 without penalty. © 2013 Optical Society of America.


Li F.,ZTE TX | Cao Z.,Hunan University | Chen M.,ZTE TX | Li X.,ZTE TX | And 6 more authors.
2016 Optical Fiber Communications Conference and Exhibition, OFC 2016 | Year: 2016

We experimentally demonstrate the highest capacity signal (560Gbit/s 128QAM-OFDM) transmission for 2-km inter-connection with the BER under 3.8×10-3. © 2016 OSA.


Li F.,Hunan University | Zhang J.,ZTE TX | Zhang J.,Fudan University | Yu J.,ZTE TX | Li X.,Fudan University
Optics Letters | Year: 2014

Dual-polarization two-subcarrier coherent optical orthogonal frequency division multiplexing (CO-OFDM) transmission and reception is successfully demonstrated with blind equalization. A two-subcarrier quadrature phase shift keyed OFDM (QPSK-OFDM) signal can be equalized as a 9-ary quadrature amplitude modulation signal in the time domain with the cascaded multimodulus algorithm equalization method. The nonlinear effect resistance and transmission distance can be enhanced compared with the traditional CO-OFDM transmission system based on frequency equalization with training sequence. © 2014 Optical Society of America.


Li F.,ZTE TX | Li F.,Georgia Institute of Technology | Li X.,ZTE TX | Li X.,Georgia Institute of Technology | And 6 more authors.
IEEE Photonics Journal | Year: 2015

In this paper, we experimentally demonstrated transmission of a 100-Gb/s discrete Fourier transform (DFT)-spread 32-quadrature amplitude modulation (QAM) discrete multitone (DMT) signal in an intensity-modulation/direct-detection system utilizing a direct-modulated laser. We find that DFT-spread cannot only reduce the peak-to-average power ratio but also improve the robustness to high-frequency power attenuation and narrow-band interference in the high-speed short-reach optical communication systems. Vestigial sideband (VSB) enabled by a narrow-bandwidth tunable optical filter can be adopted to resist the power fading effect induced by the fiber chromatic dispersion after direct detection. The measured bit error ratio (BER) of 100-Gb/s VSB DFT-spread DMT signal after 20-km large effective area fiber is less than the hard-decision forward-error-correction (HD-FEC) limitation of 3.8 × 10-3. © 2009-2012 IEEE.


Zhang J.,ZTE TX | Zhang J.,Georgia Institute of Technology | Yu J.,ZTE TX | Yu J.,Fudan University | Chi N.,Fudan University
2016 Optical Fiber Communications Conference and Exhibition, OFC 2016 | Year: 2016

We propose a novel scheme of high symbol-rate optical Nyquist signal generation with approaching zero roll-off factors. Improved performances are experimentally demonstrated by optical Nyquist 75- and 125-GBaud signals in Nyquist-WDM system. © 2016 OSA.


Jia Z.,ZTE Tx | Chien H.-C.,ZTE Tx | Zhang J.,ZTE Tx | Cai Y.,ZTE Tx | Yu J.,ZTE Tx
2015 IEEE Photonics Conference, IPC 2015 | Year: 2015

The performance of dual-carrier 400G solutions based on three high-order quadrature amplitude modulation (QAM) formats (8/16/32-QAM) is investigated on the same platform. We first study the benefit and penalty differences of Gray and differential coding, and then experimentally compare OSNR sensitivities and transmission performance using flexible transceiver configuration and the same EDFA-only SSMF link. Experimental results show the implementation penalties are 1.85 dB for 42-GBaud PM-8QAM, which is 1 dB and 1.5 dB better than 32-GBaud PM-16QAM and 25-GBaud PM-32QAM at 5.92-dB Q2-factor (corresponding to a BER of 2.4E-2), respectively. It is also found that maximum reaches of 2460 km for 42.6-GBaud PM-8QAM, 1640 km for 32-GBaud 16QAM, and 820 km for 25-GBaud PM-32QAM are achieved. Furthermore, the performances of cascaded multi-modulus algorithm (CMMA) and decision-directed least mean square (DD-LMS) algorithms are also compared. The improvement by addition of one sample/symbol based DD-LMS digital filter is investigated as well. © 2015 IEEE.


Jia Z.,ZTE TX | Chien H.-C.,ZTE TX | Zhang J.,ZTE TX | Dong Z.,ZTE TX | Cai Y.,ZTE TX
Conference on Optical Fiber Communication, Technical Digest Series | Year: 2014

We present and analyze several pre- and post-compensation algorithms for bandwidth-limited optical signal on mitigation towards inter-symbol-interference (ISI) or joint ISI and inter-channel-interference (ICI) impairments. Experimental results and support to higher-order modulation format are also demonstrated. © 2014 OSA.


Zhang J.,Georgia Institute of Technology | Wang J.,Georgia Institute of Technology | Xu M.,Georgia Institute of Technology | Lu F.,Georgia Institute of Technology | And 3 more authors.
2016 Optical Fiber Communications Conference and Exhibition, OFC 2016 | Year: 2016

Filter-bank multi-carrier (FBMC) is used to demonstrate a full-duplex asynchronous quasi-gapless carrier-aggregation for millimeter-wave radio-access-technology in heterogeneous 5G mobile-data-network. Compared with OFDM with guard-bands, FBMC achieves higher spectral-efficiency with better EVMs at less received power. © 2016 OSA.


Zhang J.,Georgia Institute of Technology | Xu M.,Georgia Institute of Technology | Wang J.,Georgia Institute of Technology | Lu F.,Georgia Institute of Technology | And 5 more authors.
European Conference on Optical Communication, ECOC | Year: 2015

We propose and experimentally demonstrate a novel inter-/intra-radio-access-technology (RAT) carrier-aggregation scheme for next generation 5G heterogeneous mobile data network. The real-time standard 4G-LTE signal is carrier-aggregated with three broadband 60GHz millimeter-wave (MMW) signals based on proposed optical-domain band-mapping method. © 2015 Viajes el Corte Ingles, VECISA.

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