A Simple DBPSK Modem Based on High-Speed Logical Gates for a 70/80 GHz GbE Microwave Link.

A simple DBPSK modulator and demodulator based on high-speed logical gates is implemented. The modulator and demodulator is verified in a GbE microwave link for the 70/80 GHz band. Performance is evaluated back-to-back and in an outdoor hop over 1 km. We also show how the scheme may be extended to support the DQPSK format and thus double the capacity further.

[1]  V. Dyadyuk,et al.  Improved spectral efficiency for a multi-gigabit Mm-wave communication system , 2007, 2007 European Microwave Conference.

[2]  Bengt-Erik Olsson,et al.  RF-assisted optical dual-carrier 112 Gbit/s polarization-multiplexed 16-QAM transmitter , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[3]  Louis J. Ippolito,et al.  Attenuation by Atmospheric Gases , 1986 .

[4]  S. Little.  Is microwave backhaul up to the 4G task? , 2009, IEEE Microwave Magazine.

[5]  Fuqin Xiong.  Digital Modulation Techniques , 2000 .

[6]  Herbert Zirath,et al.  A Novel FPGA-Based 2.5Gbps D-QPSK Modem for High Capacity Microwave Radios , 2010, 2010 IEEE International Conference on Communications.