Multimedia wireless communication systems

在过去的十年中，移动电话市场的爆炸式增长是电信行业的一个主要发展。目前全球有超过20亿用户。仅在美国，手机服务行业的年收入就超过1000亿美元。尽管对移动电话服务的需求没有放缓的迹象，但该行业正在为下一波创新做准备，其中包括无线服务，如高速数据、网络会议、新闻、讲座、音乐、电影等的音频/视频流。这些不同的应用程序本质上需要不同的服务质量（QoS）级别。挑战在于设计能够支持既吸引人又负担得起的应用程序的系统。

During the past decade, a major development in the telecommunications industry has been the explosive growth of the cellular telephone market. There are currently over two billion subscribers world-wide. In the US alone, the cellular service industry generates an annual revenue in excess of one hundred billion dollars. Even though the demand for cellular phone service shows no sign of slowing down, the industry is preparing for the next wave of innovation which includes wireless services such as high-speed data, audio/video streaming for web conferences, news, lectures, music, movies, etc. These different applications require inherently different Quality of Service (QoS) levels. The challenge is to design systems capable of supporting applications which are both appealing and affordable.