Generating a composite signal with code division multiplexing (CDM) and time division multiplexing (TDM) pilots
AssigneeIntellectual Ventures Holding 81 LLC
InventorNicholas William Anderson
Life of this patent
Estimating the term…
Abstract
A user equipment (UE) may be configured to receive a signal in a time slot, wherein the signal includes a first reference signal, a second reference signal and data scrambled using a data scrambling sequence. Further, the first reference signal and the second reference signal are not scrambled using the data scrambling sequence. The second reference signal having a code sequence being a non-zero power of two in length and is time multiplexed with the data. The UE recovers the data of the received signal using the first or second reference signal.
Claims20
A user equipment (UE) comprising:
- a receiver;
- and
- a processor;
- the receiver and the processor are configured to receive a signal in a time slot of a radio frame having a plurality of time slots, wherein:
- the signal includes a first reference signal, a second reference signal and first data scrambled using a data scrambling sequence;
- the first reference signal and the second reference signal are not scrambled using the data scrambling sequence;
- the second reference signal has a code sequence that is a non-zero power of two in length combined with a QPSK sequence and the second reference signal being split into a plurality of fragments with the fragments being multiplexed into the received signal;
- and
- the second reference signal is time multiplexed to be at an end in time of the time slot with the first data;
- and
- the receiver and the processor are configured to recover the first data of the received signal using the first or second reference signal.
A method performed by a user equipment (UE), the method comprising:
- receiving a signal in a time slot of a radio frame having a plurality of time slots, wherein the signal includes a first reference signal, a second reference signal and first data scrambled using a data scrambling sequence;
- wherein the first reference signal and the second reference signal are not scrambled using the data scrambling sequence;
- wherein the second reference signal has a code sequence that is a non-zero power of two in length combined with a QPSK sequence and the second reference signal being split into a plurality of fragments with the fragments being multiplexed into the received signal;
- and
- the second reference signal is time multiplexed to be at an end in time of the time slot with the first data;
- and
- recovering the first data of the received signal using the first or second reference signal.
At least one non-transient computer readable medium containing program instructions for causing a user equipment (UE) to perform a method of:
- receiving a signal in a time slot of a radio frame having a plurality of time slots, wherein the signal includes a first reference signal, a second reference signal and first data scrambled using a data scrambling sequence;
- wherein the first reference signal and the second reference signal are not scrambled using the data scrambling sequence;
- wherein the second reference signal has a code sequence that is a non-zero power of two in length combined with a QPSK sequence and the second reference signal being split into a plurality of fragments with the fragments being multiplexed into the received signal;
- and
- the second reference signal is time multiplexed to be at an end in time of the time slot with the first data;
- and
- recovering the first data of the received signal using the first or second reference signal.
A user equipment (UE) comprising:
- means for receiving a signal in a time slot of a radio frame having a plurality of time slots, wherein the signal includes a first reference signal, a second reference signal and first data scrambled using a data scrambling sequence;
- wherein the first reference signal and the second reference signal are not scrambled using the data scrambling sequence;
- wherein the second reference signal has a code sequence that is a non-zero power of two in length combined with a QPSK sequence and the second reference signal being split into a plurality of fragments with the fragments being multiplexed into the received signal;
- and
- the second reference signal is time multiplexed to be at an end in time of the time slot with the first data;
- and
- means for recovering the first data of the received signal using the first or second reference signal.
Dependencies are inferred from the claim text.