1 the role of fixed wireless access networks in deployment broadband services and competition local telecommunications markets an engineering economic public policy analysis kanchana wanichkorn andrew cmu edu marvin sirbu department carnegie mellon university pittsburgh pa 15213 abstract through use a forward looking model this paper analyzes cost structure bfwa examines their viability by comparing costs implementing operating at 2 6 ghz mmds frequencies with digital subscriber line dsl cable modem hybrid fiber coax to provide voice over ip internet residential small business customers detailed investment requirements are reported for state delaware along series sensitivity analyses on how network vary population density usage demand available spectrum choice frequency technical characteristics underlying major findings include average higher than however is more effective areas less