Apparatus and method for estimating a carrier-to-interference-and-noise ratio in a communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-Hwan Chang, Yun-Sang Park, Sang-Hoon Sung
Life of this patent
Estimating the term…
Abstract
In an apparatus for estimating a Carrier-to-Interference-and-Noise Ratio (CINR) in a communication system, received signals are blocked based on sub-carriers with similar channel characteristics. Interference and noise levels and true received signal levels are computed on a block-by-block basis from the blocked received signals. CINRs are estimated on a block-by-block basis using ratios between the computed interference and noise levels and the computed true received signal levels. The apparatus can estimate a CINR for all channels even when the channel characteristics of the sub-carriers of the received signals are not similar to each other.
Claims31
An apparatus for estimating a Carrier-to-Interference-and-Noise Ratio (CINR) in a communication system, comprising:
- means for blocking received signals based on sub-carriers with similar channel characteristics;
- means for computing interference and noise levels on a block-by-block basis and true received signal levels on a block-by-block basis from the blocked received signals;
- and
- means for estimating CINRs on a block-by-block basis using ratios between the computed interference and noise levels and the computed true received signal levels,
- wherein the computing means further includes received signal level measurers for measuring levels of the blocked received signals and computing and outputting a sum of the received signal levels, interference and noise level estimators for estimating interference and noise levels of the blocked received signals and computing and outputting a sum of the interference and noise levels, and subtracters for subtracting the sum of the interference and noise levels from the sum of the received signal levels, and outputting a result of the subtraction.
An apparatus for estimating a Carrier-to-Interference-and-Noise Ratio (CINR) in a communication system, comprising:
- means for blocking received signals based on sub-carriers with similar channel characteristics;
- means for computing interference and noise levels on a block-by-block basis and true received signal levels on a block-by-block basis from the blocked received signals;
- and
- means for computing a sum of the interference and noise levels and a sum of the true received signal levels to produce a total interference and noise level and a total true received signal level, and estimating a total CINR using a ratio of the total true received signal level to the total interference and noise level.
A method for estimating a Carrier-to-Interference-and-Noise Ratio (CINR) in a communication system, comprising the steps of:
- (a) blocking received signals based on sub-carriers with similar channel characteristics by blocking means;
- (b) computing interference and noise levels on a block-by-block basis and true received signal levels on a block-by-block basis from the blocked received signals, by (b-1) measuring levels of the blocked received signals and computing and outputting a sum of the received signal levels, (b-2) estimating interference and noise levels of the blocked received signals and computing and outputting a sum of the interference and noise levels, and (b-3) subtracting the sum of the interference and noise levels from the sum of the received signal levels and outputting a true received signal level estimate by computing means;
- and
- (c) estimating CINRs on a block-by-block basis using ratios between the computed interference and noise levels and the computed true received signal levels by estimating means.
A method for estimating a Carrier-to-Interference-and-Noise Ratio (CINR) in a communication system, comprising the steps of:
- (a) blocking received signals based on sub-carriers with similar channel characteristics by blocking means;
- (b) computing interference and noise levels on a block-by-block basis and true received signal levels on a block-by-block basis from the blocked received signals by computing means;
- and
- (c) computing a sum of the interference and noise levels and a sum of the true received signal levels to produce a total interference and noise level and a total true received signal level, and estimating a total CINR using a ratio of the total true received signal level to the total interference and noise level by computing means.
Dependencies are inferred from the claim text.