Method and apparatus for estimating noise power per subcarrier in a multicarrier system
First Claim
Patent Images
1. A method comprising:
- receiving a signal from a wireless channel, said signal being a multicarrier signal;
decoding said signal to generate a decoded signal; and
using said signal and said decoded signal to estimate noise power for individual subcarriers of said signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Noise power is estimated for subcarriers in a multicarrier system by first decoding a received multicarrier signal and then using the decoded signal information and the received signal information to perform the estimation. Soft decision or hard decision decoding may be used. In at least one embodiment, channel estimates are also made using the decoded signal information and the received signal information.
-
Citations
40 Claims
-
1. A method comprising:
-
receiving a signal from a wireless channel, said signal being a multicarrier signal;
decoding said signal to generate a decoded signal; and
using said signal and said decoded signal to estimate noise power for individual subcarriers of said signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An apparatus for use in a multicarrier system, comprising:
-
a demapper to demap received signal points, based on a predetermined signal constellation, to generate demapped information;
a decoder to decode said demapped information to generate decoded information;
a mapper to map said decoded information, based on said predetermined signal constellation, to generate decoded signal points; and
a noise estimator to estimate noise power for individual subcarriers associated with said received signal points using said received signal points and said decoded signal points. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for use in a multicarrier system, comprising:
-
demapping received signal points, based on a predetermined signal constellation, to generate demapped information;
decoding said demapped information to generate decoded information;
mapping said decoded information, based on said predetermined signal constellation, to generate decoded signal points; and
estimating noise power for individual subcarriers associated with said received signal points using said received signal points and said decoded signal points. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. A system for use in a multicarrier communication system, comprising:
-
at least one dipole antenna to receive a multicarrier signal from a wireless channel, said multicarrier signal having a number of received signal points;
a demapper to demap said received signal points, based on a predetermined signal constellation, to generate demapped information;
a decoder to decode said demapped information to generate decoded information;
a mapper to map said decoded information, based on said predetermined signal constellation, to generate decoded signal points; and
a noise estimator to estimate noise power for individual subcarriers associated with said received signal points using said received signal points and said decoded signal points. - View Dependent Claims (32, 33, 34, 35, 36)
-
-
37. An article comprising a storage medium having instructions stored thereon that, when executed by a computing platform, result in:
-
obtaining a signal that was received from a wireless channel, said signal being a multicarrier signal;
decoding said signal to generate a decoded signal; and
using said signal and said decoded signal to estimate noise power for individual subcarriers of said signal. - View Dependent Claims (38, 39, 40)
-
Specification