The Combinatorial Clock Auction is a two-stage auction format, which has been used to sell spectrum licenses worldwide in the recent years. It draws on a number of elegant ideas inspired by economic theory. A revealed preference activity rule should provide incentives to bid straightforward, i.e., consistent with the bidders' valuations on a payoff-maximizing package, in each round of the clock phase. A second-price rule should set incentives to bid truthfully in both phases. If bidders respond to these incentives and bid straightforward in the clock phase and truthful in the second sealed-bid stage, then the auction is fully efficient. Unfortunately, bidders might neither bid straightforward in the clock phase nor truthful on all packages in the second sealed-bid stage due to strategic reasons or practical limitations. We introduce metrics based on Afriat's Efficiency Index to analyze straightforward bidding and report on empirical data from the lab and from the field in the British 4G auction in 2013 and the Canadian 700 MHz auction in 2014, where the bids were made public. The data provides evidence that bidders deviate significantly from straightforward bidding in the clock phase, which can restrict the bids they can submit in the supplementary phase. We show that such restrictions can have a significant negative impact on efficiency and revenue.

Leading experts in industrial organization and auction theory examine the recent European telecommunication license auction experience. In 2000 and 2001, several European countries carried out auctions for third generation technologies or universal mobile telephone services (UMTS) communication licenses. These "spectrum auctions" inaugurated yet another era in an industry that has already been transformed by a combination of staggering technological innovation and substantial regulatory change. Because of their spectacular but often puzzling outcomes, these spectrum auctions attracted enormous attention and invited new research on the interplay of auctions, industry dynamics, and regulation. This book collects essays on this topic by leading analysts of telecommunications and the European auction experience, all but one presented at a November 2001 CESifo conference; comments and responses are included as well, to preserve some of the controversy and atmosphere of give-and-take at the conference.The essays show the interconnectedness of two important and productive areas of modern economics, auction theory and industrial organization. Because spectrum auctions are embedded in a dynamic interaction of consumers, firms, legislation, and regulation, a multidimensional approach yields important insights. The first essays discuss strategies of stimulating new competition and the complex interplay of the political process, regulation, and competition. The later essays focus on specific spectrum auctions. Combining the empirical data these auctions provide with recent advances in microeconomic theory, they examine questions of auction design and efficiency and convincingly explain the enormous variation of revenues in different auctions.

An international team of experts covers the pros and cons of different auction formats and lessons learned in the field.

This paper investigates how firms bidding behavior in various auctions is affected by capital structure. A theoretical model is developed where the first price sealed bid and the English auction are examined. We find as debt levels increase, firms tend to decrease their bids. The lower bids give the competition incentives to decrease their bid as well. These results are then investigated empirically using the recent FCC spectrum auctions. Consistent with the theoretical model, larger debt levels of the bidding firm and the competition tend to lead to lower bids. Additional determinants of bidding behavior in these auctions are also analyzed.

This brief explores current research on dynamic spectrum auctions, focusing on fundamental auction theory, characteristics of the spectrum market, spectrum auction architecture and possible auction mechanisms. The brief explains how dynamic spectrum auctions, which enable new users to gain spectrum access and existing spectrum owners to obtain financial benefits, can greatly improve spectrum efficiency by resolving the artificial spectrum shortage. It examines why operators and users face significant challenges due to specialty of the spectrum market and the related requirements imposed on the auction mechanism design. Concise and up-to-date, Dynamic Spectrum Auction in Wireless Communication is designed for researchers and professionals in computer science or electrical engineering. Students studying networking will also find this brief a valuable resource.