Communication system including multiple receiving antennas and time tracking method thereof
First Claim
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1. A tracking method resolving a timing difference caused by different characteristics between antennas, comprising:
- sampling signals, at R/F analog circuits, received at the antennas;
tracking sample values resulting from the sampling of the signals; and
combining the tracked sample values,wherein the sampling and the tracking are performed independently with respect to each receiving antenna before the tracked sample values are combined, and wherein the tracking comprisesstoring the sample values in buffers corresponding to the antennas,calculating a metric based on the sample values stored in the buffers,comparing at least two sample values with one another, the at least two sample values corresponding to the metric, and outputting a result indicative thereof, and compensating for the sampling time error of the sample values based on the result.
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Abstract
A tracking method and apparatus of a communication system to prevent a timing difference and bit error rate performance degradation caused by unstable characteristics of a plurality of circuit devices are provided. The tracking method and apparatus include sampling signals received at receiving antennas, tracking sample values resulting from the sampling of the signals, and combining the tracked sample values.
5 Citations
22 Claims
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1. A tracking method resolving a timing difference caused by different characteristics between antennas, comprising:
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sampling signals, at R/F analog circuits, received at the antennas; tracking sample values resulting from the sampling of the signals; and combining the tracked sample values, wherein the sampling and the tracking are performed independently with respect to each receiving antenna before the tracked sample values are combined, and wherein the tracking comprises storing the sample values in buffers corresponding to the antennas, calculating a metric based on the sample values stored in the buffers, comparing at least two sample values with one another, the at least two sample values corresponding to the metric, and outputting a result indicative thereof, and compensating for the sampling time error of the sample values based on the result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A tracking method resolving a timing difference caused by different characteristics between antennas, comprising:
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sampling signals, at RF/analog circuits received at the antennas; mapping sample values resulting from the sampling of the signals to timing positions; combining the sample values mapped to the timing positions; tracking the combined sample values; and combining the tracked sample values, wherein the sampling and the tracking are performed independently with respect to each receiving antenna before the tracked sample values are combined, wherein the mapping comprises; mapping position indices corresponding to the timing positions of the sample values; and joint mapping of the mapping of the position indices and the timing positions. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification