Research On Home Gateway And Its Key Technologies

This paper deals with the concept of Home Network and its development in the world, describes the necessity and imminence of developing the Home network. In this papers the speciality of home network is analyzed and some kinds of networking technique available is compared, which results in the conclusion that wireless is the trend of home networking. Home gateway, which is the key device in home network is discussed with the emphasis on its definition.~ function and construction. Then a new home gateway which consists of Ethernet. WLAN(Wireless local area network) and ADSL (Asymmetric Digital Subscriber Line) is presented and WLAN technology is studied in detail. In addition, The principle and characteristic of OFDM (Orthogonal Frequency Division Multiplexing) which is an optional PHY transmission scheme in high data rate WLAN is investigated and the performance of OFDM in the indoor multipath fading channels is analyzed. Equalization is an effective technique to reduce the interference brought by multipath and two kinds of equalizers are simulated to compare their improvement in BER performance. Finally, the Home gateway is constructed and simulated with OPNET.