SYSTEMS AND METHODS TO ENHANCE SPATIAL DIVERSITY IN DISTRIBUTED-INPUT DISTRIBUTED-OUTPUT WIRELESS SYSTEMS
First Claim
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1. A method implemented within a multiuser (MU) multiple antenna system (MAS) comprising:
- communicatively coupling one or more centralized units to multiple distributed transceiver stations or antennas via a network, the network comprising wireline or wireless links or a combination of both;
employing the network as a backhaul communication channel; and
employing transmit antenna selection, user selection, or transmit power balancing to enhance channel space diversity within the MU-MAS;
receiving wireless power concurrently by a plurality of user devices from the multiple antennas.
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Abstract
Systems and methods are described for enhancing the channel spatial diversity in a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”), by exploiting channel selectivity indicators. The proposed methods are: i) antenna selection; ii) user selection; iii) transmit power balancing. All three methods, or any combination of those, are shown to provide significant performance gains in DIDO systems in practical propagation scenarios.
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Citations
36 Claims
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1. A method implemented within a multiuser (MU) multiple antenna system (MAS) comprising:
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communicatively coupling one or more centralized units to multiple distributed transceiver stations or antennas via a network, the network comprising wireline or wireless links or a combination of both; employing the network as a backhaul communication channel; and employing transmit antenna selection, user selection, or transmit power balancing to enhance channel space diversity within the MU-MAS; receiving wireless power concurrently by a plurality of user devices from the multiple antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A multiuser (MU) multiple antenna system (MAS) comprising:
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one or more centralized units communicatively coupled to multiple distributed transceiver stations or antennas via a network; the network comprising wireline or wireless links or a combination of both, employed as a backhaul communication channel; and the MU-MAS employing transmit antenna selection, user selection and/or transmit power balancing are employed to enhance channel spatial diversity; receiving wireless power concurrently by a plurality of user devices from the multiple antennas. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification