In the original proposal for the combinatorial clock auction (Ausubel, Cramton and Milgrom, 2006), a revealed-preference approach was taken to limiting bidders’ activity, based on their earlier activity. However, empirical implementations of the CCA to spectrum auctions have tended to place...

Spectrum auctions are used by governments to assign and price licenses for wireless communications. Effective auction design recognizes the importance of competition, not only in the auction, but in the downstream market for wireless communications. This paper examines several instruments...

My remarks are about spectrum policy, especially a much needed enhancement, incentive auctions. Incentive auctions would allow the Federal Communications Commission (FCC) to conduct two-sided auctions—auctions that simultaneously free-up encumbered spectrum and put it to its best use.

A proposed auction design for incentive auctions is given. The two-sided auctions enable the exchange of spectrum from a low-value use, such as over-the-air TV broadcast, to a high-value use, such as mobile broadband. The approach is both simple and effective. The auction has three stages...

In May 2008, Ofcom’s L-band auction concluded. This was Ofcom’s second combinatorial clock auction. The auction used an innovative format intended to encourage an efficient assignment of the 17 lots. Eight bidders competed for the lots. In sharp contrast to the first combinatorial clock...

Spectrum auctions are used by governments to assign and price licenses for wireless communications. The standard approach is the simultaneous ascending auction, in which many related lots are auctioned simultaneously in a sequence of rounds. I analyze the strengths and weaknesses of the approach...

In February 2008, Ofcom’s 10-40 GHz auction concluded. This was Ofcom’s first combinatorial clock auction. The auction used an innovative format intended to encourage an efficient assignment of the 27 lots. Each of the ten bidders won one or more lots. All 27 lots were assigned. This note...

We report on the use of a quadratic programming technique in recent and upcoming spectrum auctions in Europe. Specifically, we compute a unique point in the core that minimizes the sum of squared deviations from a reference point, for example, from the Vickrey-Clarke-Groves payments. Analyzing...

I begin by describing some of the problems of the simultaneous ascending auction. Then I present the package clock auction, which retains the benefits, while addressing the weaknesses, of the simultaneous ascending auction. I emphasize two essential elements of the package clock auction: the...