Mutually Destructive Bidding: The FCC Auction Design Problem

Abstract

Dissatisfaction with previous assignment mechanisms and the desire to raise revenue induced Congress to grant the FCC authority to auction radio licenses. The debate over an appropriate auction design was wide ranging with many imaginative proposals. Many of the arguments and their scientific support are unfortunately not publicly available. Here, we present our side of this debate for the record. Synergies across license valuations complicate the auction design process. Theory suggests that a “simple” (i.e., non-combinatorial) auction will have difficulty in assigning licenses efficiently in such an environment. This difficulty increases with increases in “fitting complexity.” In some environments, bidding may become “mutually destructive.” Experiments indicate that a combinatorial auction is superior to a simple auction in terms of economic efficiency and revenue generation in bidding environments with a low amount of fitting complexity. Concerns that a combinatorial auction will cause a “threshold” problem are not borne out when bidders for small packages can communicate.