Cooperative MIMO
First Claim
1. A method implemented within a multiuser (MU) multiple antenna system (MAS) comprising:
- communicatively coupling a central processor to multiple distributed wireless terminals (WTs) via a network;
measuring channel conditions for each of the multiple distributed WTs;
selecting a plurality of WTs from the multiple distributed WTs to enhance channel space diversity within the MU-MAS; and
transmitting a plurality of data streams concurrently from the plurality of WTs to a plurality of user devices.
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Accused Products
Abstract
In a multiuser (MU) multiple antenna system (MAS), a central processing unit is communicatively coupled to multiple distributed wireless terminals (WTs) via a network. The central processing unit processes channel measurements indicative of channel conditions between the multiple distributed WTs and a plurality of user devices and selects a plurality of WTs from the multiple distributed WTs to enhance channel space diversity within the MU-MAS. The central processing unit calculates (Multiple Input, Multiple Output) MIMO weights from the channel measurements for precoding a plurality of data streams that are transmitted concurrently from the plurality of WTs to the plurality of users, wherein the MIMO weights provide for a plurality of independent MIMO channels.
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Citations
28 Claims
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1. A method implemented within a multiuser (MU) multiple antenna system (MAS) comprising:
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communicatively coupling a central processor to multiple distributed wireless terminals (WTs) via a network; measuring channel conditions for each of the multiple distributed WTs; selecting a plurality of WTs from the multiple distributed WTs to enhance channel space diversity within the MU-MAS; and transmitting a plurality of data streams concurrently from the plurality of WTs to a plurality of user devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus in a multiuser (MU) multiple antenna system (MAS), comprising:
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a central processor; and a local-network interface configured to communicatively couple the central processor to multiple distributed wireless terminals (WTs) via a network; wherein the central processor is configured to; collect a set of channel measurements indicative of channel conditions between the multiple distributed WTs and a plurality of user devices; select a plurality of WTs from the multiple distributed WTs to enhance channel space diversity within the MU-MAS; and transmit a plurality of data streams concurrently from the plurality of WTs to the plurality of user devices. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory computer-readable medium having computer executable program code stored thereon, the computer executable program code configured to:
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acquire a set of channel measurements indicative of channel conditions between multiple distributed Wireless Terminals (WTs) and a plurality of user devices in a multiuser (MU) multiple antenna system (MAS), wherein the multiple distributed WTs are communicatively coupled to a central processor via a network; select a plurality of WTs from the multiple distributed WTs to enhance channel space diversity within the MU-MAS; and transmit a plurality of data streams concurrently from the plurality of WTs to the plurality of user devices. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification