A Novel FPGA-Based 2.5Gbps D-QPSK Modem for High Capacity Microwave Radios

A novel FPGA-based Differential QPSK modem (modulator and demodulator) is presented for data rates up to 2.5Gbps, in which no DAC or ADC is used. The targeted application is E-Band microwave Point-to-Point radio links in mobile backhaul for LTE and beyond.

[1]  V. Dyadyuk,et al.  A 6 Gbps Millimetre Wave Wireless Link with 2.4 bit/Hz Spectral Efficiency , 2007, 2007 IEEE/MTT-S International Microwave Symposium.

[2]  J. M. Sandri.  Microwave backhaul as a business: taking the next step [Microbusiness] , 2009 .

[3]  C. Wree,et al.  Implementation of differential precoder for high-speed optical DQPSK transmission , 2004 .

[4]  D. Fisher,et al.  A gigabit-per-second Ka-band demonstration using a reconfigurable FPGA modulator , 2005, 2005 IEEE Aerospace Conference.

[5]  G Raybon,et al.  Multiplexing and DQPSK Precoding of 10.7-Gb/s Client Signals to 107 Gb/s Using an FPGA , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.