MULTI-USER AND SINGLE USER MIMO FOR COMMUNICATION SYSTEMS USING HYBRID BEAM FORMING
First Claim
1. A station in a wireless communication system, comprising:
- a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams;
a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams;
a plurality of radio frequency (RF) beamforming chains connected to the digital precoder and configured to form at least one RF envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one RF beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams; and
a plurality of antennas operably connected to the RF beamforming chains.
1 Assignment
0 Petitions
Accused Products
Abstract
A station in a wireless communication system includes a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams, and a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams. The wireless station can further include a plurality of radio frequency (RF) beamforming chains connected to the digital precoder and configured to form at least one RF envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one RF beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams, and a plurality of antennas operably connected to the RF beamforming chains.
71 Citations
24 Claims
-
1. A station in a wireless communication system, comprising:
-
a processor circuitry configured to form at least a first plurality of data streams and a second plurality of data streams; a digital precoder configured to receive the first plurality of data streams and the second plurality of data streams; a plurality of radio frequency (RF) beamforming chains connected to the digital precoder and configured to form at least one RF envelope, wherein the digital precoder is configured to steer a plurality of digital beams within the at least one RF beam envelope, the digital beams forming a plurality of spatially distinct paths for the first plurality of data streams and a plurality of spatially distinct paths for the second plurality of data streams; and a plurality of antennas operably connected to the RF beamforming chains. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for use in a wireless network, the method comprising:
-
transmitting from a first station a channel state information reference signal (CSI-RS) from a multiple input multiple output (MIMO) multiplexing device through a plurality of baseband precoders for each of a plurality of radiofrequency (RF) precoders; transmitting an indication of a selected baseband precoder and RF precoder combination to the second station; and transmitting a MIMO data stream to a second station using the selected baseband precoder and RF precoder combination. - View Dependent Claims (15, 16, 17)
-
-
18. A method for use in a wireless network, the method comprising:
-
transmitting from a first station a channel state information reference signal (CSI-RS) from a multiple input multiple output (MIMO) multiplexing device for a plurality of radiofrequency (RF) precoders; transmitting an indication of the a selected baseband precoder and RF precoder combination to the second station; and transmitting a MIMO data stream to a second station using the selected baseband precoder and RF precoder combination. - View Dependent Claims (19, 20, 21, 22, 23, 24)
-
Specification