Joint Design of Multi-Tap Analog Cancellation and Digital Beamforming for Reduced Complexity Full Duplex MIMO Systems

Incorporating full duplex operation in Multiple Input Multiple Output (MIMO) systems provides the potential of boosting throughput performance. However, the hardware complexity of the analog self-interference canceller scales with the number of transmit and receive antennas, thus exploiting the benefits of analog cancellation becomes impractical for full duplex MIMO transceivers. In this paper, we present a novel architecture for the analog canceller comprising of reduced number of taps (tap refers to a line of fixed delay and variable phase shifter and attenuator) and simple multiplexers for efficient signal routing among the transmit and receive radio frequency chains. In contrast to the available analog cancellation architectures, the values for each tap and the configuration of the multiplexers are jointly designed with the digital beamforming filters according to certain performance objectives. Focusing on a narrowband flat fading channel model as an example, we present a general optimization framework for the joint design of analog cancellation and digital beamforming. We also detail a particular optimization objective together with its derived solution for the latter architectural components. Representative computer simulation results demonstrate the superiority of the proposed low complexity full duplex MIMO system over lately available ones.Comment: 8 pages, 4 figures, IEEE ICC 201

A Theoretical Exploration of Firms\u27 Decisions About Flexible Benefits Plans

The purpose of this paper is to examine the implications of current theories for organizations\u27 decisions about employee benefits, an area that has traditionally received little attention from researchers in the field of human resource management. Drawing on organizational and economic theories, we offer alternative explanations for observed patterns in the adoption and design of flexible benefits plans. By critically analyzing current theories in the context of flexible benefits plans, we hope to gain insights not only into the factors that may determine organizations\u27 benefits decisions, but also into the strengths and weaknesses of the theories themselves. We find that the conflicts, overlaps and limitations inherent in the theories as applied to benefits issues are substantial. The implications for future research are discussed

A Theoretical Exploration of the Adoption and Design of Flexible Benefit Plans: A Case of Human Resource Innovation

This article explores theoretical explanations of managers\u27 decisions about flexible benefit plans. We (1) examine the adoption and design of flexible benefit plans through four theoretic lenses: institutional, resource dependence, agency, and transaction costs; (2) integrate the relevant insights gained from these theories into a more complete model and derive propositions for future research; and (3) generalize the insights gained from exploring a specific innovation to broader questions surrounding decisions about other human resource innovations

Predicting Employee Health Care Decisions in a Flexible Benefits Environment

[Excerpt] The purpose of this study is to identify the determinants of employees\u27 health care selections in a flexible benefits environment. The goal is to develop a model which will enable managers to predict the health care selections of employees. The research tasks required to accomplish this goal are extensive, and are in progress. The following report will summarize the results of analyses completed to date, the analyses that are in progress, the data required to complete these analyses, and the outcomes that can be expected when the study is done

The Diffusion of Human Resource Innovations: The Case of Flexible Benefits Plans

The purpose of this paper is to examine the implications of current theories for organizations\u27 decisions about employee benefits. Drawing on organizational and economic theories, we offer alternative explanations for patterns in the adoption and design of flexible benefits plans. An integrated model of firms\u27 flex plan decisions is presented

Employee Health Insurance Decisions In a Flexible Benefits Environment

Empirical investigations of flexible benefits plans, an increasingly popular type of plan that allows employees to choose among multiple benefits options, have been limited. This study investigates hypotheses relating to the determinants of employees\u27 choices among six different health insurance options under a flexible benefits plan. Using employee-specific selection and demographic data provided by a large firm, we estimate a logistic regression model to analyze the effects of employee and plan characteristics on choice of health care plan. Results suggest that health plan decisions are significantly influenced by option premium, deductible and coinsurance amounts, and by employees\u27 age, gender, salary, and marital status. The results are considered within an expected utility maximization model

Boundaryless Organizations and Boundaryless Careers: A New Market for High-Skilled Temporary Work

A typology of four different groups of temporary workers (transitional, traditional, career, boundaryless) is derived from economic, strategic, and human resource theories. Based on a survey of 276 temporary workers, we find support for distinguishing between high-skilled boundaryless temporaries and the three other types using multinomial logistic analysis

Robotic Game Playing Internet of Things Device

Generally, the present disclosure is directed to a robotic device that can play certain games with a user, such as, for example, interactive hand-gesture-based games such as rock-paper-scissors, gesture matching, and/or gesture mirroring. In particular, in some implementations, the systems and methods of the present disclosure can include or otherwise leverage an Internet of Things (IoT) system or device to control a robotic hand based on inputs from a camera that are processed by a machine-learned model such as a gesture recognition model

Behavioral Differences Between Two Recently Sympatric Paper Wasps, the Native \u3ci\u3ePolistes Fuscatus\u3c/i\u3e and the Invasive \u3ci\u3ePolistes Dominulus\u3c/i\u3e

Polistes dominulus (Christ), an old world paper wasp, was introduced into the eastern United States in the 1970s and has been rapidly spreading westward. Recently, it has displaced the native Polistes fuscatus (F.) in at least some areas of Michigan. In order to understand why P. dominulus has been so successful, several behavioral attributes were compared between P. dominulus and P. fuscatus at a Michigan field site that contained colonies of both species nest- ing semi-naturally in plywood nestboxes. Preworker colonies of P. dominulus had a significantly greater tendency to store nectar (and had significantly higher proportions of cells with nectar) than preworker colonies of P. fuscatus. This finding may explain the higher survivorship of P. dominulus foundresses reported in a previous study. P. dominulus also had a significantly greater tendency to build vertical nests and had significantly more pedicels per comb and per cell than P. fuscatus. These findings suggest that compared to P. fuscatus, P. dominulus may have more flexibility in the positioning of its combs and, because of a possibly stronger attachment of the comb to a substrate, may be less susceptible to bird predation. The higher winter survivorship reported for P. fuscatus over P. dominulus in a previous study does not appear to be due to differences in the proportions of gynes stranded on their nests late in the fall. Finally, behavioral evidence from videography was consistent with previous reports that P. dominulus is not replacing P. fuscatus through direct agonistic interactions