Preamble configuring method in the wireless LAN system, and a method for a frame synchronization
AssigneeElectronics and Telecommunications Research Institute
InventorsWoo-Yong Lee, Sok-Kyu Lee
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Abstract
A method of configuring a preamble of a downlink frame for synchronization in data frame transmission of a 60 GHz a wireless local area network system, the method comprising arranging a short preamble having a plurality of repetitive S symbols, and an IS symbol, and arranging a long preamble having a long cyclic prefix (CP) and a plurality of L symbols for frame synchronization and symbol timing by performing auto-correlation according to the length of window of the auto-correlation.
Claims9
A method performed by a receiver of a wireless local area network system, the method comprising:
- receiving a preamble of a frame;
- and
- using the preamble for synchronization and channel estimation, wherein:
- the preamble includes a short preamble used for the synchronization and a channel estimation preamble that is used for the channel estimation and is arranged after the short preamble;
- the short preamble includes S symbols in which an S symbol is repeated 16 times and that is arranged at the starting point and an IS symbol arranged after the S symbols;
- and
- the IS symbol has the same length as the S symbol and is 180°-phased with respect to the S symbol.
An apparatus of a wireless local area network system, the method comprising:
- one or more processors that uses a preamble of a frame for synchronization and channel estimation, wherein:
- the preamble includes a short preamble used for the synchronization and a channel estimation preamble that is used for the channel estimation and is arranged after the short preamble;
- the short preamble includes S symbols in which an S symbol is repeated 16 times and that is arranged at the starting point and an IS symbol arranged after the S symbols;
- and
- the IS symbol has the same length as the S symbol and is 180°-phased with respect to the S symbol.
A non-transitory recording medium that stores instructions to a receiver of a wireless local area network system to execute:
- receiving a preamble of a frame;
- and
- using the preamble for synchronization and channel estimation, wherein:
- the preamble includes a short preamble used for the synchronization and a channel estimation preamble that is used for the channel estimation and is arranged after the short preamble;
- the short preamble includes S symbols in which an S symbol is repeated 16 times and that is arranged at the starting point and an IS symbol arranged after the S symbols;
- and
- the IS symbol has the same length as the S symbol and is 180°-phased with respect to the S symbol.
Dependencies are inferred from the claim text.