Adaptive Transceiver for Wireless NoC to Enhance Multicast/Unicast Communication Scenarios

Abstract

Wireless Network-on-Chip (WiNoC) is a viable solution to overcome critical bottlenecks in on-chip communication backbone. However, standard WiNoC approaches are vulnerable to multi-path interference introduced by on-chip physical structures. To overcome such parasitic phenomenon, this paper presents an adaptive digital transceiver, which enhances communication reliability under different wireless channel configurations. Based on a semi-realistic wireless channel model, we investigate the impact of using some channel correction techniques. Experimental results show that our approach significantly improves Bit Error Rate (BER) under different wireless channel configurations. Moreover, our adaptive transceiver allows for wireless communication links to be established in conditions where this would not be possible for standard transceiver architectures. The proposed architecture, designed using a 28nm FDSOI technology, consumes only 3.27 mW for a data rate of 10 Gbit/s and has a very small area footprint.

Analytical Model for Performance Evaluation of Token-Passing-Based WiNoCs

“…manycore is fully connected with a classic 2-D mesh NoC, while the wireless routers are shared by several cores and accessible by using the electrical routers [4]. Several other architectures exist, such as architectures with one dedicated wireless router per core [5], or architecture with a heterogeneous placement of wireless routers within a classic electrical NoC [6].…”

“…Routers are based on round-robin arbitration, while wireless routers are based on token passing channel access. The service time and channel capacities of electrical and wireless can be set separately to meet real hardware designs [4]. This model provides a degree of heterogeneity usefull to explore future design paradigms, such as chiplet or accelerators-based architectures [1].…”