Granted Patent B2

US 8,532,082 · App. 13/442,038 · Granted Sep 10, 2013

Abstract

Claims (30)

1. A network element for use in a wireless communication network, the network element comprising:

at least one antenna; and

at least one signal processor coupled to the at least one antenna and configured to:

apply a first fourier transform having a first number of points to pilot symbols corresponding to at least one pilot block to produce a transformed pilot block;

apply a second fast fourier transform having a second number points to data symbols arranged in a cluster and corresponding to data payload block to produce a transformed data payload block, the second number of points being greater than the first number of points;

output the transformed pilot block for transmission by the at least one antenna during a first time duration; and

output the cluster for transmission by the at least one antenna during a second time duration using a first frequency sub-band in a first transmission time interval and using a second frequency band in a second transmission time interval, the second frequency sub-band being different from the first frequency sub-band.

2. The network element of claim 1 , wherein the second time duration is not less than the first time duration.

3. The network element of claim 2 , wherein the second time duration is more than the first time duration.

4. The network element of claim 1 , wherein the at least one signal processor is further configured to output a plurality of pilot blocks for transmission within a transmission time interval.

5. The network element of claim 4 , wherein the at least one signal processor is further configured to use at least one of the plurality of pilot blocks for a channel quality indicator (CQI) measurement.

6. The network element of claim 1 , wherein the network element is a base station, and the at least one signal processor is further configured to use the first time duration and the second time duration to support multiple user element devices via sub-band interleaved frequency division multiple access (FDMA) operation.

7. The network element of claim 6 , wherein a pilot for a corresponding user element device uses different sub-carrier frequencies than corresponding data sub-carriers for the user element device.

8. The network element of claim 1 , wherein the at least one antenna comprises multiple antennas and the at least one signal processor is further configured to use the pilot symbols to support multiple input multiple output (MIMO) operation.

9. The network element of claim 8 , wherein the at least one signal processor is further configured to use the pilot symbols to support MIMO operation by using an orthogonal pilot arrangement between different transmit antennas.

10. The network element of claim 1 , wherein the network element is one of a user element device and a base station.

11. A method of operating a network element of a wireless communication network, the network element comprising at least one antenna and at least one signal processor operatively coupled to the at least one antenna, the method comprising operating the at least one signal processor to:

apply a first fast fourier transform having a first number of points to pilot symbols corresponding to at least one pilot block to produce a transformed pilot block;

apply a second fast fourier transform having a second number points to data symbols arranged in a cluster and corresponding to a data payload block to produce a transformed data payload block, the second number of points being greater than the first number of points;

output the transformed pilot block for transmission by the at least one antenna during a first time duration; and

output the cluster for transmission by the at least one antenna during a second time duration using a first frequency sub-band in a first transmission time interval and using a second frequency band in a second transmission time interval, the second frequency sub-band being different from the first frequency sub-band.

12. The method of claim 11 , wherein the second time duration is not less than the first time duration.

13. The method of claim 12 , wherein the second time duration is more than the first time duration.

14. The method of claim 11 , further comprising operating the at least one signal processor to output a plurality of pilot blocks for transmission within a transmission time interval.

15. The method of claim 14 , further comprising operating the at least one signal processor to use at least one of the plurality of pilot blocks for transmission within a transmission time interval.

16. The method of claim 11 , w herein the network element comprises a base station, the method further including operating the at least one signal processor to use the first time duration and the second time duration to support multiple user element devices via sub-band interleaved frequency division multiple access (FDMA) operation.

17. The method of claim 16 , wherein a pilot for a user element device uses different sub-carrier frequencies than corresponding data sub-carriers for the user element device.

18. The method of claim 11 , wherein the at least one antenna includes multiple antennas, the method further comprising operating the at least one signal processor to use the pilot symbols to support multiple input multiple output (MIMO) operation.

19. The method of claim 18 , further comprising operating the at least one signal processor to user the pilot symbols to support MIMO operation by using an orthogonal pilot arrangement between different transmit antennas.

20. The method of claim 11 , wherein the network element is one of a user element device and a base station.

Assignments (8)