Auction-style cooperative medium access control

A cooperative Medium Access Control (MAC) protocol employing auction-style relay selection combined with superposition coding is designed. In our proposed scheme, the source achieves its target throughput with the aid of cooperation. The potential candidate relays carry out autonomous decisions concerning whether to contend for a transmission opportunity to convey their traffic in the light of their individual energy requirements. Simulation results demonstrate that our scheme is capable of providing both considerable energy savings, as well as substantial throughput improvements for both the source and the relay in a ’win-win’ cooperation regime

Bidding Behaviors in eBay Auctions: Secret Reservation Price and Endogenous Entry

This paper analyzes the secret reservation price in eBay auctions. Under the assumptions of secret and public reservation price, the bidders choose the optimal bidding function and the seller selects equilibrium reservation price. This model argues that the choice of secret reservation price is rational for the seller, as they can generate higher revenue in certain conditions. It predicts that, under endogenous entry, secret reservation price leads to higher revenue since it attracts more bidders to the auction. This effect is more noticeable for luxury goods. However, secret and public reservation prices generate identical revenue for the seller if entry is exogenous. Furthermore, the results are supported by numerous recent empirical works

Bidding Behaviors in eBay Auctions: Secret Reservation Price and Endogenous Entry

This paper analyzes the secret reservation price in eBay auctions. Under the assumptions of secret and public reservation price, the bidders choose the optimal bidding function and the seller selects equilibrium reservation price. This model argues that the choice of secret reservation price is rational for the seller, as they can generate higher revenue in certain conditions. It predicts that, under endogenous entry, secret reservation price leads to higher revenue since it attracts more bidders to the auction. This effect is more noticeable for luxury goods. However, secret and public reservation prices generate identical revenue for the seller if entry is exogenous. Furthermore, the results are supported by numerous recent empirical works

Cooperative medium access control based on spectrum leasing

Based on cooperative spectrum leasing, a distributed “win–win” (WW) cooperative framework is designed to encourage the licensed source node (SN) to lease some part of its spectral resources to the unlicensed relay node (RN) for the sake of simultaneously improving the SN’s achievable rate and for reducing the energy consumption (EC). The potential candidate RNs carry out autonomous decisions concerning whether to contend for a cooperative transmission opportunity, which could dissipate some of their battery power, while conveying their traffic in light of their individual service requirements. Furthermore, a WW cooperative medium-access-control (MAC) protocol is designed to implement the proposed distributed WW cooperative framework. Simulation results demonstrate that our WW cooperative MAC protocol is capable of providing both substantial rate improvements and considerable energy savings for the cooperative spectrum leasing system

Weak Measurement of Qubit Oscillations with Strong Response Detectors: Violation of the Fundamental Bound Imposed on Linear Detectors

We investigate the continuous weak measurement of a solid-state qubit by single electron transistors in nonlinear response regime. It is found that the signal-to-noise ratio can violate the universal upper bound imposed quantum mechanically to any linear response detectors. We understand the violation by means of the cross-correlation of the detector currents.Comment: 4 pages, 4 figure