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
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Abstract
A wireless device is configured to produce a signal in a time slot of a frame, wherein the time slots have variable lengths. The signal having a first portion and a second portion, wherein the first portion and the second portion are located in defined time regions in the slot. Further, the first portion having data and a multiplexed first pilot, wherein the multiplexed first pilot is derived from a pseudo random sequence, the second portion having a pilot sequence and a cyclic prefix. The wireless device transmits the produced signal in the time slot.
Claims20
A wireless device comprising:
- a transceiver;
- and
- a processor, wherein:
- the processor is configured to produce a signal in a time slot of a frame, wherein the time slots have variable lengths, the signal having a first portion and a second portion, the first portion and the second portion are located in defined time regions in the slot, the first portion having data and a multiplexed first pilot, wherein the multiplexed first pilot is derived from a pseudo random sequence, the second portion having a pilot sequence and a cyclic prefix, and
- the transceiver is configured to transmit the produced signal in the time slot.
A method comprising:
- producing, by a wireless device, a signal in a time slot of a frame, wherein the time slots have variable lengths, the signal having a first portion and a second portion, the first portion and the second portion are located in defined time regions in the slot, the first portion having data and a multiplexed first pilot, wherein the multiplexed first pilot is derived from a pseudo random sequence, the second portion having a pilot sequence and a cyclic prefix;
- and
- transmitting, by the wireless device, the produced signal in the time slot.
A wireless device comprising:
- a transceiver;
- and
- a processor, wherein:
- the transceiver is configured to receive a signal in a time slot of a frame, wherein the time slots have variable lengths, the signal having a first portion and a second portion, the first portion and the second portion are located in defined time regions in the slot, the first portion having data and a multiplexed first pilot, wherein the multiplexed first pilot is derived from a pseudo random sequence, the second portion having a pilot sequence and a cyclic prefix,
- the processor is configured to process the signal and deriving a first channel estimate using the multiplexed first pilot and a second channel estimate using the pilot sequence, and
- the processor is configured to process the data using the first or the second channel estimate.
A method comprising:
- producing, by a wireless device, a signal in a time slot of a frame, wherein the time slots have variable lengths, the signal having a first portion and a second portion, the first portion and the second portion are located in defined time regions in the slot, the first portion having data and a multiplexed first pilot, wherein the multiplexed first pilot is derived from a pseudo random sequence, the second portion having a pilot sequence and a cyclic prefix;
- and
- processing the signal and deriving a first channel estimate using the multiplexed first pilot and a second channel estimate using the pilot sequence, and
- processing the data using the first or the second channel estimate.
Dependencies are inferred from the claim text.