Granted Patent B2

US 8,897,380 · App. 12/664,050 · Granted Nov 25, 2014

Abstract

Claims (40)

1. An apparatus, comprising:

a digital broadband receiver configured to receive bits transmitted in orthogonal frequency division multiplexing transmission symbols; and

a scaling module configured to scale a reliability of the received bits with a scaling function which is in relation to an amount of interference to a time domain portion of a received orthogonal frequency division multiplexing transmission symbol;

wherein the apparatus is configured to calculate the scaling function based on interfering transmission burst state information.

2. The apparatus of claim 1 , wherein the burst state information indicates a number of samples not affected by a burst in relation to useful orthogonal frequency division multiplexing transmission symbol duration expressed in samples.

3. The apparatus of claim 1 , wherein the burst state information indicates a number of samples not affected by a burst in relation to a maximum burst duration expressed in samples, that could affect one orthogonal frequency division multiplexing transmission symbol.

4. The apparatus of claim 1 , wherein the scaling function is a non-linear scaling function that is selected from the following functions representing interfering transmission burst state information (BSI):

BSI=[( B−x ( m ))/ B]^n 1 , where n 1 ≧0 and n 1 ≠1; and

BSI=[( N−x ( m ))/ N]^n 1 , where n 1 ≧0 and n 1 ≠1,

where a maximum burst duration that could affect one orthogonal frequency division multiplexing transmission symbol is denoted by B expressed in number of samples, a useful orthogonal frequency division multiplexing transmission symbol duration is denoted by N expressed in a number of samples, and the number of samples affected by the burst in the mth orthogonal frequency division multiplexing transmission symbol is denoted by x(m).

5. The apparatus of claim 1 , wherein the apparatus is further configured to scale the reliability of the received bits with a second function which is based on transmission channel state information.

6. The apparatus of claim 5 , wherein the transmission channel state information is a function of channel frequency response estimate.

7. The apparatus of claim 5 , wherein the channel state information (CSI) is determined by the function:

CSI=[| H k |]^n 2 , where n 2 ≧0,

where H k denotes a transmission channel frequency response estimate at carrier k, where k =1,2, . . . , N c , and N c denotes the number of carriers.

8. The apparatus of claim 1 , wherein the apparatus is configured to time the scaling based on detected cellular wideband noise transmitted by a cellular transmitter in the same or a co-located apparatus or based on information signaled about the presence of cellular wideband noise.

9. The apparatus of claim 1 , wherein the apparatus is further configured to determine the amount of interfered part of the received orthogonal frequency division multiplexing transmission symbol based at least in part on a number of samples of the received orthogonal frequency division multiplexing transmission symbol affected by a burst.

10. A method, comprising:

receiving in a digital broadband receiver bits transmitted in orthogonal frequency division multiplexing transmission symbols; and

scaling a reliability of the received bits with a scaling function;

wherein the scaling function is a function which is in relation to an amount of interference to a time domain portion of a received orthogonal frequency division multiplexing transmission symbol; and

wherein the method comprises calculating the scaling function based on interfering transmission burst state information.

11. The method of claim 10 , wherein the burst state information indicates a number of samples not affected by a burst in relation to useful orthogonal frequency division multiplexing transmission symbol duration expressed in samples.

12. The method of claim 10 , wherein the burst state information indicates a number of samples not affected by a burst in relation to a maximum burst duration, expressed in samples, that could affect one orthogonal frequency division multiplexing transmission symbol.

13. The method of claim 10 , wherein the method further comprises to scale the reliability of the received bits with a second function which is based on transmission channel state information.

14. A computer program product comprising a Non-transitory computer readable medium bearing computer program code embodied therein for use with an apparatus, the computer program code configured to cause:

receiving bits in a digital broadband receiver transmitted in orthogonal frequency division multiplexing transmission symbols;

scaling a reliability of the received bits with a scaling function; and

calculating the scaling function based on interfering transmission burst state information;

wherein the scaling function is a function and is in relation to an amount of interference to a time domain portion of a received orthogonal frequency division multiplexing transmission symbol.

15. The computer program product of claim 14 , wherein the burst state information indicates a number of samples not affected by a burst in relation to useful orthogonal frequency division multiplexing transmission symbol duration expressed in samples.

16. A scaling module for a digital broadband receiver configured to scale a reliability of received bits transmitted in orthogonal frequency division multiplexing transmission symbols;

wherein the scaling module comprises a physical hardware module;

wherein the scaling module is configured to scale the reliability of the received bits by a scaling function which is in relation to an amount of interference to a time domain portion of a received orthogonal frequency division multiplexing transmission symbol; and

wherein the scaling module is configured to calculate the scaling function based on interfering transmission burst state information.

17. The scaling module of claim 16 , wherein the burst state information indicates a number of samples not affected by a burst in relation to useful orthogonal frequency division multiplexing transmission symbol duration expressed in samples.

18. An apparatus, comprising:

means for receiving bits transmitted in orthogonal frequency division multiplexing transmission symbols;

means for scaling the reliability of the received bits with a scaling function which is in relation to an amount of interference to a time domain portion of a received orthogonal frequency division multiplexing transmission symbol; and

means for calculating the scaling function based on interfering transmission burst state information.

Assignments (8)