Because of the rapid growth of the Internet, we are currently heading into the information age. High-speed data transmission for wireless communication is becoming increasingly important, especially for mobile terminals. This is because a high rate of speed requires a wide bandwidth, and the spectrum bandwidth is a precious commodity in wireless communications. It is very expensive to provide a data rate of more than one Mbps. For this reason, the question is raised: Will wireless communications come to an end? The answer, of course, is no. However, many problems lie ahead, waiting to be solved. Some of these problems are due to Mother Natures limitations, some require technology breakthroughs, some are service creation strategy issues, and some issues are impacted because of the governments role. The future need of wireless communications is wide bandwidth for multi-media, such as voice, data, video, and image transmission. Designing the wireless information superhighway for the last 100 meters can satisfy this large bandwidth requirement. The demand and capacity requirements of a long communication link lead us to consider a hybrid system that combines wireline and wireless.