D-band channel aggregation receiver architecture based on IF analog processing using digital wavelet

The D-band (110-170GHz) is intended to provide tens of GHz bandwidth for beyond 5G very high data rate communications. The huge available band is split into multiple aggregated sub-bands. Managing such a number of bands is difficult using conventional heterodyne receiver. A different approach is proposed here relying on analogue projection in wavelet basis. In this paper, the signal projection in the Walsh/Hadamard domain is considered. The paper shows that the projection of aggregated channels into the parallelized Walsh analog architecture can relax the bandwidth constrains and the resolution of A/D conversion. The proposed architecture is deeply reconfigurable, allowing some AI to adjust the receiver for either communication purposes or spectrum sensing.