| 摘要 |
A multiple-access digital radio communication network and method with communication uplinks between user terminal transmitters and central nodes that are connected with fixed communication links. User terminal transmitters are assigned to beam/node regions corresponding to an associated central node and their location within the central node antenna beam coverage area. User terminal transmitters assigned to one beam/node coverage region use multiple access channels that are mutually orthogonal for transmitting digital message information. These multiple access channels are reused in adjacent and other beam/node coverage regions. Error-correction coding (25), interleaving (26), and a modulator (29) are used in the user transmitter to increase resistance to potential interference from user terminal transmitters in other beam/node coverage regions. At a central node, an uplink receiver (21) provides digitized beam/node signals to a multiuser detector (23) and via the fixed communication links to multiuser detectors at adjacent central nodes.
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