| 摘要 |
PURPOSE: A physical layer apparatus for transmitting and receiving signals of various standards, a wireless LAN system having the same, and a method for wireless LAN are provided to transmit and receive stably a DSSS/CCK signal and an OFDM signal by discriminating between a DSSS/CCK standard and an OFDM standard. CONSTITUTION: A PLCP(Physical Layer Convergence Procedure) processor(421) is used for receiving a DSSS/CCK demodulation signal, an OFDM demodulation signal, and a packet signal of a MAC layer, dividing the received signals into an OFDM standard and a DSSS/CCK standard, outputting the divided signals to corresponding layers, and performing control operations. A transmission processor(423) is used for receiving the packet signal from the PLCP processor, performing an OFDM modulation process and a DSSS/CCK modulation process, and outputting an OFDM analog signal and a DSSS/CCK analog signal. A reception processor(425) is used for converting the OFDM analog signal and the DSSS/CCK analog signal to the digital signals, interpolating the converted digital signals, and outputting the DSSS/CCK demodulation signal and the OFDM demodulation signal to the PLCP processor.
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