In spectrum policy, reallocation decisions are based on assessments of interference and economic feasibility between incumbents and new entrants. In many cases, new entrants claim that coexistence is possible with cooperation by incumbents through device modification or radio replacement....

Despite the scepticism raised by the German Monopoly Commission our analysis shows that the revised theory of contestable markets can be applied to the telecommunications market better than expected. The original contestable market theory implied three assumptions necessary to be satisfied to...