Terahertz communication based on high order digital modulation

We have developed a 0.14THz wireless link with 10Gbit/s data rate. Terahertz signal is generated and detected by Schottky diode superheterodyne transmitter and receiver. 16QAM high order digital modulation/demodulation has been successfully applied in IF signal processing, which works with non real time software method and could improve the spectrum efficiency and carrier noise rate (CNR). The system has successfully transmitted 10Gbit/s data rate signal over 0.5km with bit error rate (BER)<10−6, CNR>35dB. The maximum transmission distance is estimated to be about 1.5km.

[1]  J. Wells,et al.  Faster than fiber: The future of multi-G/s wireless , 2009, IEEE Microwave Magazine.

[2]  V. Dyadyuk,et al.  A Multigigabit Millimeter-Wave Communication System With Improved Spectral Efficiency , 2007, IEEE Transactions on Microwave Theory and Techniques.

[3]  Martin Koch,et al.  Audio signal transmission over THz communication channel using semiconductor modulator , 2004 .

[4]  Hans J. Liebe,et al.  Millimeter-wave properties of the atmosphere: Laboratory studies and propagation modeling , 1987 .

[5]  Tadao Nagatsuma,et al.  10-Gbit/s Wireless Transmission Systems Using 120-GHz-Band Photodiode and MMIC Technologies , 2009, 2009 Annual IEEE Compound Semiconductor Integrated Circuit Symposium.

[6]  T. Kurner,et al.  300 GHz channel measurement and transmission system , 2008, 2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves.

[7]  P. Chevalier,et al.  A 140-GHz double-sideband transceiver with amplitude and frequency modulation operating over a few meters , 2009, 2009 IEEE Bipolar/BiCMOS Circuits and Technology Meeting.