Data signaling with superimposed pilots
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a communication comprising data signaling and superimposed pilots, the superimposed pilots being superimposed on the data signaling transmitted via one or more communication resources of the communication. The UE may decode the data signaling from the communication. The UE may measure one or more channels of one or more beams based at least in part on the superimposed pilots. Numerous other aspects are described.
1 . A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
receive a communication comprising data signaling and superimposed pilots, the superimposed pilots being superimposed on the data signaling transmitted via one or more communication resources of the communication, an amount of power allocated to the data signaling being based at least in part on a number of ports for the superimposed pilots;
decode the data signaling from the communication; and
measure one or more channels of one or more beams based at least in part on the superimposed pilots.
2 . The UE of claim 1 , wherein the one or more processors, to receive the communication, are configured to:
receive the data signaling via an active beam; and
receive the superimposed pilots via the one or more beams.
3 . The UE of claim 2 , wherein the one or more processors are further configured to:
estimate a channel associated with the communication based at least in part on additional pilots received via the active beam, or
receive the additional pilots via the active beam as superimposed pilots or as pilots that are orthogonal to the data signaling.
4 . The UE of claim 1 , wherein the superimposed pilots comprise one or more of:
channel state information reference signals (CSI-RSs),
cell specific reference signals (CRSs), or
extended demodulation reference signals (DMRSs).
5 . The UE of claim 1 , wherein the superimposed pilots comprise:
a first set of superimposed pilots, and
a second set of superimposed pilots that are orthogonal to the first set of superimposed pilots.
6 . The UE of claim 1 , wherein the superimposed pilots share available transmission power with the data signaling transmitted via the one or more communication resources.
7 . The UE of claim 1 , wherein the one or more processors, to perform iterative estimations of data and the superimposed pilots, are configured to:
perform iterative data estimations on the data signaling in segments of time and frequency of the communication resources; or
perform iterative pilot channel estimations on signaling of the communication, the signaling having an iterative estimation of the data subtracted.
8 . The UE of claim 1 , wherein the one or more processors are further configured to:
transmit an indication of support for receiving the communication comprising data signaling and superimposed pilots.
9 . The UE of claim 8 , wherein the indication of support indicates support of one or more parameters for the communication comprising data signaling and superimposed pilots.
10 . The UE of claim 1 , wherein the one or more processors are further configured to:
receive an indication of a configuration for receiving the communication comprising the data signaling and the superimposed pilots.
11 . The UE of claim 10 , wherein the configuration indicates one or more of:
a number of superimposed pilot ports in the communication,
a span of symbols used for the superimposed pilots,
frequency resources that are used for the superimposed pilots,
a pilot type of the superimposed pilots, or
a proportion of available power used for the data signaling or for the superimposed pilots.
12 . The UE of claim 1 , wherein the one or more processors are further configured to:
receive an indication that the communication includes the superimposed pilots.
13 . A network node for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
transmit an indication that a communication includes superimposed pilots; and
transmit the communication comprising data signaling and the superimposed pilots, the superimposed pilots being superimposed on the data signaling transmitted via one or more communication resources of the communication, an amount of power allocated to the data signaling being based at least in part on a number of ports for the superimposed pilots.
14 . The network node of claim 13 , wherein the one or more processors, to transmit the communication, are configured to:
transmit the data signaling via an active beam; and
transmit the superimposed pilots via the one or more beams.
15 . The network node of claim 14 , wherein the one or more processors are further configured to:
transmit additional pilots via the active beam.
16 . The network node of claim 15 wherein the one or more processors, to transmit the pilots via the active beam, are configured to:
transmit the additional pilots via the active beam as orthogonal pilots, or
transmit the additional pilots via the active beam as superimposed pilots.
17 . The network node of claim 13 , wherein the superimposed pilots comprise one or more of:
channel state information reference signals (CSI-RSs),
cell specific reference signals (CRSs), or
extended demodulation reference signals (DMRSs).
18 . The network node of claim 13 , wherein the superimposed pilots comprise:
a first set of superimposed pilots, and
a second set of superimposed pilots that are orthogonal to the first set of superimposed pilot.
19 . The network node of claim 18 , wherein the second set of superimposed pilots are orthogonal to first set of superimposed pilots based at least in part on one or more of:
the first set of superimposed pilots and the second set of superimposed pilots using different time resources,
the first set of superimposed pilots and the second set of superimposed pilots using different frequency resources, or
the first set of superimposed pilots and the second set of superimposed pilots using different coding resources.
20 . The network node of claim 13 , wherein the superimposed pilots share available transmission power with the data signaling on the one or more communication resources.
21 . The network node of claim 13 , wherein the one or more processors are further configured to:
receive an indication of support for receiving the communication comprising the data signaling and the superimposed pilots.
22 . The network node of claim 13 , wherein the one or more processors are further configured to:
transmit an indication of a configuration for receiving the communication comprising the data signaling and the superimposed pilots.
23 . The network node of claim 22 , wherein the configuration indicates one or more of:
a number of superimposed pilot ports in the communication,
a span of symbols used for the superimposed pilots,
frequency resources that are used for the superimposed pilots,
a pilot type of the superimposed pilots, or
a proportion of available power used for the data signaling or for the superimposed pilots.
24 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving a communication comprising data signaling and superimposed pilots, the superimposed pilots being superimposed on the data signaling transmitted via one or more communication resources of the communication, an amount of power allocated to the data signaling being based at least in part on a number of ports for the superimposed pilots;
decoding the data signaling from the communication; and
measuring one or more channels of one or more beams based at least in part on the superimposed pilots.
25 . The method of claim 24 , wherein the superimposed pilots share available transmission power with the data signaling transmitted via the one or more communication resources.
26 . The method of claim 24 , wherein receiving the communication comprises:
receiving the data signaling via an active beam; and
receiving the superimposed pilots via the one or more beams.
27 . The method of claim 24 , wherein the superimposed pilots comprise:
a first set of superimposed pilots, and
a second set of superimposed pilots that are orthogonal to the first set of superimposed pilots.
28 . A method of wireless communication performed by a network node, comprising:
transmitting an indication that a communication includes superimposed pilots; and
transmitting the communication comprising data signaling and the superimposed pilots, the superimposed pilots being superimposed on the data signaling transmitted via one or more communication resources of the communication, an amount of power allocated to the data signaling being based at least in part on a number of ports for the superimposed pilots.
29 . The method of claim 28 , wherein the superimposed pilots share available transmission power with the data signaling on the one or more communication resources.
30 . The method of claim 28 , wherein transmitting the communication comprises:
transmitting the data signaling via an active beam; and
transmitting the superimposed pilots via the one or more beams.