Wireless Networks-on-Chips: Architecture, Wireless Channel, and Devices

Wireless networks-on-chips (WINoCs) hold substantial promise for enhancing multicore integrated circuit performance, by augmenting conventional wired interconnects. As the number of cores per IC grows, intercore communication requirements will also grow, and WINoCs can be used to both save power and reduce latency. In this article, we briefly describe some of the key challenges with WINoC implementation, and also describe our example design, iWISE, which is a scalable wireless interconnect design. We show that the integration of wireless interconnects with wired interconnects in NoCs can reduce overall network power by 34 percent while achieving a speedup of 2.54 on real applications

Energy-efficient Adaptive Wireless NoCs Architecture

Abstract—With the increasing number of cores in chip multiprocessors, the design of an efficient communication fabric is essential to satisfy the bandwidth and energy requirements of multi-core systems. Scalable Network-on-Chip (NoC) designs are quickly becoming the standard communication framework to replace bus-based networks. However, the conventional metallic interconnects for inter-core communication consume excess energy and lower throughput which are major bottlenecks in NoC architectures. On-chip wireless interconnects can alleviate the power and bandwidth problems of traditional metallic NoCs. In this paper, we propose an adaptable wireless Network-on-Chip architecture (A-WiNoC) that uses adaptable and energy efficient wireless transceivers to improve network power and throughput by adapting channels according to traffic patterns. Our adaptable algorithm uses link utilization statistics to re-allocate wireless channels and a token sharing scheme to fully utilize the wireless bandwidth efficiently. We compare our proposed A-WiNoC to both wireless/electrical topologies with results showing a throughput improvement of 65%, a speedup between 1.4-2.6X on real benchmarks, and an energy savings of 25-35%. I

Consumer Xenocentrism as Determinant of Foreign Product Preference: A System Justification Perspective

Foreign and domestic product purchase behavior largely depends on consumer predispositions. The dominant construct in international marketing literature explaining such behavior has been consumer ethnocentrism, which is conceptually anchored in social identity theory. However, such a perspective overlooks evidence that certain consumers are consistently attracted by the “foreignness” of a product. Drawing from system justification theory, the present investigation conceptualizes and provides an empirical test of the consumer xenocentrism construct that is intended to explain consumer attraction toward foreign products. Using survey data from five complementary studies, the authors develop and validate a new scale (the C-XENSCALE) to measure consumers’ xenocentric tendencies and offer extensive evidence on its ability to explain consumer preferences for foreign products. The authors discuss implications of the findings for theory and managerial practice and identify future research directions