Wavelet-Powered mm-Wave OFDM for Efficient Wireless Network-on-Chip Communication

Multicore modules can now be integrated on a single device for high-performance computing thanks to scaling technology and smaller transistors. Considering latency, energy, and data rate as performance criteria, wireless network-on-chips (WNOCs) have been shown to be a feasible option for on-chip communication in comparison to wired connections. OFDM modulation techniques have been used to overcome the shortcomings of on-off keying (OOK) modulation schemes. In this research, we describe a novel approach to OFDM modulation and demodulation in the mm-wave spectrum based on the Dual Tree Complex Wavelet Transform (DTCWT). Modeling DTCWT-based OFDM in MATLAB and testing its performance across a wide range of subcarrier densities (from 128 to 1024) and mm-wave frequencies (from 20 to 60 GHz) is presented. It is shown that DTCWT-based OFDM can increase BER performances by up to 80% when compared to FFT-based OFDM methods. The proposed OFDM model works well in wireless NOC settings.