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US 8,509,194 B2Granted
Dirty paper coding and reference signal design
AssigneeQUALCOMM Incorporated
InventorsAlexei Yurievitch Gorokhov, Ravi Palanki
Life of this patent
Estimating the term…
Abstract
A method of wireless communication includes receiving a signal comprising an encoded downlink reference signal (DL-RS) modified by an effective channel. The encoded DL-RS is encoded based on crosstalk interference. The method further includes estimating the effective channel.
Claims42
A method of wireless communication, comprising:
- receiving, at a first UE, a first downlink reference signal (DL-RS), the first DL-RS being encoded based at least in part on a crosstalk channel between a transmission to the first UE and a second UE, a second DL-RS for the second UE, an effective channel from a serving base station, and an actual channel from the serving base station;
- and
- estimating, by the UE, the effective channel.
A method of wireless communication, comprising:
- encoding a first downlink reference signal (DL-RS) based at least in part on actual traffic transmissions to a first UE;
- transmitting the first DL-RS to the first UE;
- encoding a second DL-RS based at least in part on a crosstalk channel between a transmission to a second UE and the first UE, the first DL-RS, an effective channel to the second UE, a third DL-RS to be received by the second UE, and an actual channel to the second UE;
- and
- transmitting the second DL-RS to the second UE.
2 more elements
An apparatus for wireless communication, comprising:
- means for receiving, at a first apparatus, a first downlink reference signal (DL-RS), the first DL-RS being encoded based at least in part on a crosstalk channel between a transmission to the first apparatus and a second apparatus, a second DL-RS for the second apparatus, an effective channel from a serving base station, and an actual channel from the serving base station;
- and
- means for estimating the effective channel.
An apparatus for wireless communication, comprising:
- means for encoding a first downlink reference signal (DL-RS) based at least in part on actual traffic transmissions to a first UE;
- means for transmitting the first DL-RS to the first UE;
- means for encoding a second DL-RS based at least in part on a crosstalk channel between a transmission to a second UE and the first UE, the first DL-RS, an effective channel to the second UE, a third DL-RS to be received by the second UE, and an actual channel to the second UE;
- and
- means for transmitting the second DL-RS to the second UE.
2 more elements
A computer program product, comprising:
- a non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
- program code to receive, at a first user equipment (UE), a first downlink reference signal (DL-RS), the first DL-RS being encoded based at least in part on a crosstalk channel between a transmission to the first UE and a second apparatus, a second DL-RS for the second UE, an effective channel from a serving base station, and an actual channel from the serving base station;
- and
- program code to estimate the effective channel.
1 more element
A computer program product, comprising:
- a non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
- program code to encode a first downlink reference signal (DL-RS) based at least in part on actual traffic transmissions to a first UE;
- program code to transmit the first DL-RS to the first UE;
- program code to encode a second DL-RS based at least in part on a crosstalk channel between a transmission to a second UE and the first UE, the first DL-RS, an effective channel to the second UE, a third DL-RS to be received by the second UE, and an actual channel to the second UE;
- and
- program code to transmit the second DL-RS to the second UE.
3 more elements
An apparatus for wireless communication, comprising:
- a memory unit;
- and
- at least one processor coupled to the memory unit, the at least one processor configured:
- to receive, at a first user equipment (UE), a first downlink reference signal (DL-RS), the first DL-RS being encoded based at least in part on a crosstalk channel between a transmission to the first UE and a second apparatus, a second DL-RS for the second UE, an effective channel from a serving base station, and an actual channel from the serving base station;
- and
- to estimate the effective channel.
3 more elements
An apparatus for wireless communication, comprising:
- a memory unit;
- and
- at least one processor coupled to the memory unit, the at least one processor configured:
- to encode a first downlink reference signal (DL-RS) based at least in part on actual traffic transmissions to a first UE;
- to transmit the first DL-RS to the first UE;
- to encode a second DL-RS based at least in part on a crosstalk channel between a transmission to a second UE and the first UE, the first DL-RS, an effective channel to the second UE, a third DL-RS to be received by the second UE, and an actual channel to the second UE;
- and
- to transmit the second DL-RS to the second UE.
5 more elements
Dependencies are inferred from the claim text.