Seamless integration of 100-G wire line and 100-GHz wireless link system

Ze Dong; Jianjun Yu; Xinying Li; Nan Chi

doi:10.1117/12.2008211

4 February 2013 Seamless integration of 100-G wire line and 100-GHz wireless link system

Ze Dong, Jianjun Yu, Xinying Li, Nan Chi

Proceedings Volume 8645, Broadband Access Communication Technologies VII; 86450D (2013) https://doi.org/10.1117/12.2008211
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

In this invited paper, we experimentally demonstrate a seamlessly integrated fiber-wireless system that delivers 108-Gb/s signal through 80-km fiber and 1-m wireless transport over free-space at 100 GHz, adopting polarization-divisionmultiplexing quadrature-phase-shift-keying (PDM-QPSK) modulation and heterodyning coherent detection. The X- and Y-polarization baseband components of the optical PDM-QPSK are simultaneously up-converted to 100-GHz wireless carriers by optical polarization-diversity heterodyne beating, and then independently transmitted and received by two pairs of transmitter and receiver antennas, which forms a 2x2 multiple-input multiple-output (MIMO) wireless link. At the wireless receiver, two-stage down conversion is performed with firstly done in analog domain based on balanced mixer and sinusoidal radio frequency (RF) signal, and then in digital domain based on digital signal processing (DSP). MIMO signal de-multiplexing combined with optical polarization multiplexing and free space MIMO crosstalk is realized by constant modulus algorithm (CMA) in digital signal processing (DSP) part at the receiver. The bit-error ratio (BER) for the 108-Gb/s PDM-QPSK signal is less than the pre-forward-error-correction (pre-FEC) threshold of 3.8x10^-3 after both 1-m wireless delivery at 100 GHz and 80-km single-mode fiber-28 (SMF-28) transmission. To our knowledge, this is the first demonstration to realize 100-Gb/s signal delivery through both fiber and wireless links at 100GHz.

Citation Download Citation

Ze Dong, Jianjun Yu, Xinying Li, and Nan Chi "Seamless integration of 100-G wire line and 100-GHz wireless link system ", Proc. SPIE 8645, Broadband Access Communication Technologies VII, 86450D (4 February 2013); https://doi.org/10.1117/12.2008211

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KEYWORDS

Digital signal processing

Receivers

Polarization

Transmitters

Heterodyning

Antennas

Modulation

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