Synchronous multiple access procedure for use with an ultra wideband system
Original Publication Date: 2001-Oct-01
Included in the Prior Art Database: 2003-Jul-23
Channelising can be done by applying a relatively large time offset (many nanoseconds) to each impulse and using “pseudo-random noise” codes (PN codes) for distinguishing between channels. The system could then have virtually an unlimited number of channels. This virtually unlimited number of channels may, however, not be of high practical importance since the reach of an ultra wideband (UWB) system is severely limited by the necessary limitation of trans- mit power, in order not to unduly interfere with other radio systems. This will very probably be a stringent regulatory requirement. Such a limitation in reach and, therefore, of the area of the radio cell means, on the other hand, that the number of users that is to be interconnected within the cell is also limited.