Peak to average power ratio (PAPR) reduction for repetition mode within single user, multiple user, multiple access, and/or MIMO wireless communication

• US 9,780,846 B2
• Filed: 05/23/2016
• Issued: 10/03/2017
• Est. Priority Date: 04/24/2011
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies Wireless IP Pte Limited
• Inventors: Porat, Ron, Zheng, Jun
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): BHATTI, HASHIM S
• Application Number:
  US15/161,360
• Publication Number:
  US 20160269083A1
• Time in Patent Office: 498 Days
• Field of Search: None
• CPC Class Codes: H04B 2201/70706 with means for reducing the peak-to-average power ratio
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 27/2621 Reduction thereof using phase offsets between subcarriers
• CPC Class Codes: H04L 27/2666 Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02B 80/00 Architectural or constructional elements improving the thermal performance of buildings
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Selective processing of one or more packets to be transmitted from a wireless communication device to another wireless communication device is effective to reduce the peak to average power ratio (PAPR) of the transmission. The one or more packets are transmitted via two or more sub-bands of an available transmission medium. The number of coefficients or factors within that sequence corresponds to the number of sub-bands via which the one or more packets are to be transmitted. Also, a phase ramp or time-domain cyclic shift may be added to one or more of the packets after having undergone multiplication by one of the coefficients or factors within the sequence.

Claims

1. A wireless communication device comprising:

a communication interface configured to receive a first packet via a first sub-band of a plurality of sub-bands and a second packet via a second sub-band of the plurality of sub-bands from another wireless communication device, wherein the first packet is multiplied by a sequence within the another wireless communication device to generate the second packet, wherein the sequence is effective to reduce or minimize peak to average power ratio (PAPR) of the second packet, and wherein the sequence includes at least two coefficients selected from a set that includes 1, −

1, j, and −

j; and

a processing circuitry configured to process the first packet and the second packet to recover information included therein.

2. The wireless communication device of claim 1, wherein the first sub-band of the plurality of sub-bands and the second sub-band of the plurality of sub-bands are of substantially same size.

3. The wireless communication device of claim 1, wherein at least one of the first packet or the second packet is time domain cyclic shifted within the another wireless communication device.

4. The wireless communication device of claim 1, wherein the communication interface is further configured to:

receive a third packet via the first sub-band of the plurality of sub-bands and a fourth packet via the second sub-band of the plurality of sub-bands from the another wireless communication device, wherein the third packet is multiplied by the sequence within the another wireless communication device to generate the fourth packet.

5. The wireless communication device of claim 1, wherein the communication interface is further configured to:

receive a third packet via the first sub-band of the plurality of sub-bands, a fourth packet via the second sub-band of the plurality of sub-bands from the another wireless communication device, a fifth packet via a third sub-band of the plurality of sub-bands, and a sixth packet via a fourth sub-band of the plurality of sub-bands from the another wireless communication device, wherein the third packet is multiplied by another sequence within the another wireless communication device to generate the fourth packet, the fifth packet, and the sixth packet, wherein the another sequence is effective to reduce or minimize PAPR of the at least one of the fourth packet, the fifth packet, or the sixth packet, and wherein the another sequence includes at least four coefficients selected from the set that includes 1, −

1, j, and −

j.

6. The wireless communication device of claim 5, wherein the first sub-band of the plurality of sub-bands, the second sub-band of the plurality of sub-bands, the third sub-band of the plurality of sub-bands, and the fourth sub-band of the plurality of sub-bands are of substantially same size.

7. The wireless communication device of claim 1 further comprising:

a laptop computer, a tablet, a personal digital assistant, a personal computer, or a cellular telephone.

8. The wireless communication device of claim 1 further comprising:

a wireless station (STA) or a smart meter station (SMSTA), wherein the another wireless communication device includes an access point (AP).

9. A wireless communication device comprising:

a communication interface configured to receive a first packet via a first sub-band of a plurality of sub-bands and a second packet via a second sub-band of the plurality of sub-bands from another wireless communication device, wherein the first packet is multiplied by a sequence within the another wireless communication device to generate the second packet, wherein the sequence is effective to reduce or minimize peak to average power ratio (PAPR) of the first packet and the second packet, wherein the sequence includes at least two coefficients selected from a set that includes 1, −

1, j, and −

j, wherein at least one of the first packet or the second packet is time domain cyclic shifted within the another wireless communication device, and wherein the first sub-band of the plurality of sub-bands and the second sub-band of the plurality of sub-bands are of substantially same size; and

a processing circuitry configured to process the first packet and the second packet to recover information included therein.

10. The wireless communication device of claim 9, wherein the communication interface is further configured to:

receive a third packet via the first sub-band of the plurality of sub-bands and a fourth packet via the second sub-band of the plurality of sub-bands from the another wireless communication device, wherein the third packet is multiplied by the sequence within the another wireless communication device to generate the fourth packet.

11. The wireless communication device of claim 9, wherein the communication interface is further configured to:

receive a third packet via the first sub-band of the plurality of sub-bands, a fourth packet via the second sub-band of the plurality of sub-bands from the another wireless communication device, a fifth packet via a third sub-band of the plurality of sub-bands, and a sixth packet via a fourth sub-band of the plurality of sub-bands from the another wireless communication device, wherein the third packet is multiplied by another sequence within the another wireless communication device to generate the fourth packet, the fifth packet, and the sixth packet, wherein the another sequence is effective to reduce or minimize PAPR of at least one of the fourth packet, the fifth packet, and or the sixth packet, wherein the another sequence includes at least four coefficients selected from the set that includes 1, −

1, j, and −

j, and wherein the first sub-band of the plurality of sub-bands, the second sub-band of the plurality of sub-bands, the third sub-band of the plurality of sub-bands, and the fourth sub-band of the plurality of sub-bands are of substantially same size.

12. The wireless communication device of claim 9 further comprising:

a laptop computer, a tablet, a personal digital assistant, a personal computer, or a cellular telephone.

13. The wireless communication device of claim 9 further comprising:

a wireless station (STA) or a smart meter station (SMSTA), wherein the another wireless communication device includes an access point (AP).

14. A method for execution by a wireless communication device, the method comprising:

receiving, via a communication interface of the wireless communication device, a first packet via a first sub-band of a plurality of sub-bands and a second packet via a second sub-band of the plurality of sub-bands from another wireless communication device, wherein the first packet is multiplied by a sequence within the another wireless communication device to generate the second packet, wherein the sequence is effective to reduce or minimize peak to average power ratio (PAPR) of the first packet and the second packet, and wherein the sequence includes at least two coefficients selected from a set that includes 1, −

1, j, and −

j; and

processing the first packet and the second packet to recover information included therein.

15. The method of claim 14, wherein the first sub-band of the plurality of sub-bands and the second sub-band of the plurality of sub-bands are of substantially same size.

16. The method of claim 14, wherein at least one of the first packet or the second packet is time domain cyclic shifted within the another wireless communication device.

17. The method of claim 14 further comprising:

receiving, via the communication interface of the wireless communication device, a third packet via the first sub-band of the plurality of sub-bands and a fourth packet via the second sub-band of the plurality of sub-bands from the another wireless communication device, wherein the third packet is multiplied by the sequence within the another wireless communication device to generate the fourth packet.

18. The method of claim 14 further comprising:

receiving, via the communication interface of the wireless communication device, a third packet via the first sub-band of the plurality of sub-bands, a fourth packet via the second sub-band of the plurality of sub-bands from the another wireless communication device, a fifth packet via a third sub-band of the plurality of sub-bands, and a sixth packet via a fourth sub-band of the plurality of sub-bands from the another wireless communication device, wherein the third packet is multiplied by another sequence within the another wireless communication device to generate the fourth packet, the fifth packet, and the sixth packet, wherein the another sequence is effective to reduce or minimize PAPR of at least one of the fourth packet, the fifth packet, and or the sixth packet, and wherein the another sequence includes at least four coefficients selected from the set that includes 1, −

1, j, and −

j.

19. The method of claim 18, wherein the first sub-band of the plurality of sub-bands, the second sub-band of the plurality of sub-bands, the third sub-band of the plurality of sub-bands, and the fourth sub-band of the plurality of sub-bands are of substantially same size.

20. The method of claim 14, wherein the wireless communication device includes a wireless station (STA) or a smart meter station (SMSTA), and the another wireless communication device includes an access point (AP).