Current Wireless modem not good enough? You should wait for some 802.22 goodness. IEEE just announced a new Wireless standard 802.22 that is capable of covering up to 12,000 square miles. The standard is actually for Wireless Regional Area Networks or WRAN which uses the white spaces left in the TV frequency spectrum.
The new wireless standard is meant to bring internet connectivity to large areas which are less densely populated that did not have previous coverage. The WRAN-standard will be capable of delivering up to 22Mbps without interfering with existing TV broadcast stations. The network is said to function with a series of base stations like current wireless networks, the customer will only require a small box installed in their house for internet access.