Short-range point-to-point gigabit wireless transmission at 50 GHz

In this paper, we present a short-range point-to-point gigabit wireless transmission at 50 GHz utilising prototypes of simple transmitter and receiver front-ends. The particular prototypes have been assembled from millimetre-wave (MMW) components with WR15 and coaxial ports. The MMW transmitter generates an amplitude shift keying (ASK) modulated signal by mixing a polar non-return-zero (NRZ) of pseudo-random binary sequence (PRBS) with a word length of 2¹¹-1 and a local oscillator (LO) signal of 50 GHz. MMW coherent receiver with a low-pass filter has been employed to demodulate the ASK signal. For the digital baseband transmission at 50 GHz, a BER of 10^-11 has been achieved for 3.125 Gbps wireless transmission with received RF power greater than -61 dBm. The prototype MMW receiver imposes 3 dB sensitivity penalty when bit rate is increased from 2.125 to 3.125 Gbps.