RADIO INTERFACE CARD FOR A BROADBAND WIRELESS ATM SYSTEM

摘要

A radio interface card for use in a base station of a broadband wireless ATM system to support bi-directional communications with customer premise network interface units (NIUs) over a wireless link. The ATM radio interface card (ARIC) includes a modem for modulating data received from an ATM backbone connected to the base station into a point to multipoint format for transmission over the link to the NIUs. A demodulator in the ARIC supports a point to point protocol for processing digital communications received from distributed NIUs located within a geographic area.