A 10-Gbps optical WiMAX transport system.

A 10-Gbps optical worldwide interoperability for microwave access (WiMAX) transport system employing vertical cavity surface emitting laser (VCSEL) and spatial light modulator (SLM) with 16-quadrature amplitude modulation (QAM)-orthogonal frequency-division multiplexing (OFDM) modulating signal is proposed. With the assistance of equalizer and low noise amplifier (LNA) at the receiving site, good bit error rate (BER) performance, clear constellation map, and clear eye diagram are achieved in the proposed systems. An optical WiMAX transport system, transmitting 16-QAM-OFDM signal over a 6-m free-space link, with a data rate of 10 Gbps is successfully demonstrated. Such a 10-Gbps optical WiMAX transport system would be attractive for providing services including Internet and telecommunication services. Our proposed system is suitable for the free-space lightwave transport system in visible light communication (VLC) application.

[1]  Ting Wang,et al.  WiMAX over Free-Space Optics - Evaluating OFDM Multi-Subcarrier Modulation in Optical Wireless Channels , 2006, 2006 IEEE Sarnoff Symposium.

[2]  B. C. Thomsen,et al.  Degenerate Mode-Group Division Multiplexing , 2012, Journal of Lightwave Technology.

[3]  Raj Jain,et al.  Scheduling in IEEE 802.16e mobile WiMAX networks: key issues and a survey , 2009, IEEE Journal on Selected Areas in Communications.

[4]  Hai-Han Lu,et al.  10m/500 Mbps WDM visible light communication systems. , 2012, Optics express.

[5]  Chia-Yi Chen,et al.  Bidirectional 16-QAM OFDM in-building network over SMF and free-space VLC transport. , 2013, Optics letters.

[6]  C. Wei,et al.  3.22-Gb/s WDM visible light communication of a single RGB LED employing carrier-less amplitude and phase modulation , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[7]  Chi-Wai Chow,et al.  Investigation of 4-ASK modulation with digital filtering to increase 20 times of direct modulation speed of white-light LED visible light communication system , 2012 .

[8]  Otakar Wilfert,et al.  An Introduction to Free-space Optical Communications , 2010 .

[9]  Jianjun Yu,et al.  Demonstration of 575-Mb/s downlink and 225-Mb/s uplink bi-directional SCM-WDM visible light communication using RGB LED and phosphor-based LED. , 2013, Optics express.

[10]  Yu-Chih Huang,et al.  Dynamic bandwidth allocation with QoS support for integrated EPON/WiMAX networks , 2013, 2013 IEEE 14th International Conference on High Performance Switching and Routing (HPSR).

[11]  Peng-Chun Peng,et al.  Optical 16-QAM-52-OFDM transmission at 4 Gbit/s by directly modulating a coherently injection-locked colorless laser diode. , 2012, Optics express.