Apparatus and method for transmitting tag
AssigneeElectronics and Telecommunications Research Institute
InventorsSang Hyun MO, Kyu Won HAN, Chan-Won PARK, Hyochan BANG, Dong-Beom SHIN
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Abstract
Disclosed are an apparatus and a method for transmitting a tag. The apparatus for transmitting a tag converts 2 bits of a plurality of bit data into one symbol using phase information and orthogonal information. The apparatus for transmitting a tag generates a sub-carrier signal by multiplying the symbol by a square wave having a faster period by a predetermined number of times than a period of the symbol, and transmits the sub-carrier signal to a reader
Claims20
A method for transmitting a plurality of bit data by a tag transmitting apparatus, the method comprising:
- converting 2 bits of the plurality of bit data into one symbol using phase information and orthogonal information;
- generating a sub-carrier signal by multiplying the symbol by a square wave having a faster period by a predetermined number of times than a period of the symbol;
- and
- transmitting the sub-carrier signal to a reader.
A method for transmitting a plurality of bit data by a tag transmitting apparatus, the method comprising:
- converting 2 bits of the plurality of bit data into a first symbol using phase information and orthogonal information;
- converting 2 bits of the plurality of bit data into a second symbol using the phase information and the orthogonal information;
- separating the first symbol from the second symbol;
- generating a first sub-carrier signal by multiplying the separated first symbol by a square wave having a first link frequency;
- generating a second sub-carrier signal by multiplying the separated second symbol by a square wave having a second link frequency;
- transmitting the first sub-carrier signal to a reader through a first antenna;
- and
- transmitting the second sub-carrier signal to the reader through a second antenna.
An apparatus for transmitting a tag comprising:
- a data signal generator to generate a plurality of bit data;
- a bit-symbol converter to convert 2 bits of the plurality of bit data into one symbol using phase information and orthogonal information;
- a first sub-carrier generator to generate a first sub-carrier signal by multiplying the first symbol by a square wave having a first link frequency;
- and
- a first load modulator to modulate the first sub-carrier signal.
Dependencies are inferred from the claim text.