Evangelos Pallis

Wireless provision of true VoD services and fast access to Internet

The evolution of digital compression techniques has made possible the provision of full-motion video services through networking infrastructures of sufficient bandwidth. This paper presents a wireless broadband network, which is capable of providing true interactive VoD services (with full VCR functions) and fast access to Internet to a number of simultaneous clients. The network is based on frequency hopping spread spectrum (FHSS) technology operating in the 2.4 GHz frequency band. The paper describes the system architecture and configuration adopted in a real environment trial and elaborates on the provided picture quality in a multi-client environment. Copyright

A broadband wireless access system for wired and wireless LANs

The paper presents a broadband wireless access system for wired and wireless LANs. The system supports the provision of Internet access and of multimedia services of moderate bandwidth requirements (such as the reception of short audio and video clips) with a guaranteed minimum throughput. Design issues, as well as a prototype implementation, are discussed. The prototype has served as a testbed for conducting performance measurements and the paper reports on relevant results. Details on the prototypes operational status and on user feedback are included together with a vision for future exploitation and extensions.