Apparatus and method for detecting frame boundary in wireless communication system
AssigneeSeah Networks Co., Ltd.
InventorJi-myung Oh
Life of this patent
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Abstract
Disclosed is an apparatus and a method for detecting a boundary of a frame in a wireless communication system. The apparatus includes: a controller for measuring correlation energy with preambles with respect to received signals transmitted from a transmitter, measuring strength of the received signals, and removing a sample from frames constituting the received signals, the preambles predetermined and used by the system, the sample having a ratio of the correlation energy with respect to the strength of the received signals, the ratio being smaller than a reference value; and a classifier for extracting a maximum value from the correlation energy received from the controller, and determining a boundary of a downlink of the frames constituting the received signals.
Claims21
An apparatus for detecting a boundary of a frame in a wireless communication system, the apparatus comprising:
- a controller for measuring correlation energy with preambles with respect to received signals, measuring strength of the received signals, and removing a sample from frames of the received signals, the preambles predetermined and used by the system, the sample having a ratio of the correlation energy with respect to the strength of the received signals, the ratio being smaller than a reference value;
- and
- a classifier for extracting a maximum value from the correlation energy received from the controller, and determining the boundary of a downlink from the frames of the received signals.
An apparatus for detecting a boundary of a frame in a wireless communication system, the apparatus comprising:
- a preamble correlation energy detector for detecting correlation energy of one or more samples of decimator output signals and at least one predetermined preamble;
- a received signal strength detector for measuring the strength of the decimator output signals in each of the samples;
- an energy comparator/controller for comparing the correlation energy received from the preamble correlation energy detector with the strength of the received signals received from the received signal strength detector, and removing a sample in which the ratio of the correlation energy with respect to the strength of the received signals is smaller than a reference value;
- and
- a classifier for extracting a maximum value from the correlation energy received from the energy comparator/controller, and determining the boundary of a downlink from the frames of the received signals.
A method for detecting a boundary of a frame in a wireless communication system, the method comprising the steps of:
- a) measuring correlation energy of sample signals transmitted from a transmitter and preambles predetermined and used by the system, and measuring strength of the sample signals transmitted from the transmitter;
- b) removing a sample in which a ratio of the correlation energy with respect to the strength of the received signals is smaller than a reference value;
- and
- c) extracting a maximum value from the correlation energy in which the sample has been removed, and determining the boundary of a downlink from the frames of the received signals.
Dependencies are inferred from the claim text.