Equalization and Coding Techniques for Edge Modulation Signaling

This paper describes equalization, coding, and crosstalk reduction techniques for edge modulation signaling. We analyze the inter-symbol interference of edge modulation using enumeration method and present expressions for the error rate from inter-edge interference. We present receiver-side digital equalization using a time-to-digital converter, and transmitter-side encoder-based digital equalization. These digital equalization techniques increase the data rate to 64 Gb/s, demonstrating additional loss compensation compared to traditional equalization techniques. Furthermore, a crosstalk cancellation technique reduces crosstalk by 20 dB without additional signal processing. Simulations with organic package chiplet channels compare the performance of edge modulation, unidirectional PAM, simultaneous bidirectional PAM, and high-order PAM.