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US 8,509,329 B2Granted
Data receiving apparatus for receiving data frame using constellation mapping scheme and data transmission apparatus for transmitting the date frame
AssigneeSamsung Electronics Co., Ltd.
InventorsUi Kun Kwon, Tae Rim Park, Young Soo Kim, Eung Sun Kim
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Abstract
Disclosed are a data receiving apparatus that may discriminate a type of a received data frame, and a data transmission apparatus that may apply a constellation mapping scheme to a data frame so that a data receiving apparatus may discriminate the data frame in accordance with the constellation mapping scheme applied to the data frame.
Claims15
A data transmission apparatus, comprising:
- a constellation mapping unit configured to apply a first constellation mapping scheme to a first data frame;
- and
- a transmission unit configured to transmit the first data frame to a data receiving apparatus,
- wherein the data receiving apparatus receives the first data frame, receives, from a second data transmission apparatus, a second data frame where a second constellation mapping scheme is applied, and discriminates the first data frame and the second data frame in accordance with each of the first and second constellation mapping schemes,
- wherein the first data frame is modulated using an orthogonal frequency division multiplexing (OFDM) scheme.
- wherein the constellation mapping unit is further configured to group, into a first sub carrier group and a second sub carrier group, a plurality of sub carriers of an OFDM symbol included in the first data frame, and
- wherein the first constellation mapping scheme applies a constellation mapping scheme mutually different with respect to the first sub carrier group and the second sub carrier group.
4 more elements
A data receiving apparatus, comprising:
- a reception unit configured to receive a first data frame where a first constellation mapping scheme is applied, and receive a second data frame where a second constellation mapping scheme is applied;
- a determination unit configured to separately generate a decision matrix with respect to the first and second data frames, and compare the separately generated decision matrix with a predetermined threshold value to determine a constellation mapping scheme applied to each of the first and second data frames;
- and
- a frame identification unit configured to identify the first data frame and the second data frame in accordance with the determined constellation mapping scheme.
1 more element
A method of receiving data by a data receiving apparatus, the method comprising:
- receiving a first data frame where a first constellation mapping scheme is applied;
- receiving a second data frame where a second constellation mapping scheme is applied;
- separately generating a decision matrix with respect to the first and second data frames;
- comparing the separately generated decision matrix with a predetermined threshold value to determine the constellation mapping scheme applied to each of the first and second data frames;
- and
- identifying the first data frame and the second data frame in accordance with the determined constellation mapping scheme.
3 more elements
Dependencies are inferred from the claim text.