Spectrally efficient high capacity wireless communication systems

• Main Authors: PARISH, DAVID M, ROY, RICHARD H. III, BARRATT, CRAIG H
• Format: Patent
• Language: English; French; German
• Published: 21.01.2015
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MULTIPLEX COMMUNICATION; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; WIRELESS COMMUNICATIONS NETWORKS

The wireless system at a base station for receiving uplink signals transmitted from a number of remote terminals using a common conventional uplink channel has a receiver system with a number of antenna elements and receivers for producing measurements of combinations of the uplink signals. A receive spatial processing device determines and stores receive spatial signatures for the remote terminals using the measurements. A spatial demultiplexer uses the receive spatial signatures and the measurement to produce separated uplink signals. The uplink signals from the remote terminals can be received independently while simultaneously communicating on the common uplink channel.