List of PPDUs Supported in 802.11g
========================================


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        **What is a PPDU in IEEE 802.11g?**

        The Physical Protocol Data Unit is the data packet format transmitted over the physical layer.

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        **What components make up the 802.11g PPDU?**

        A preamble, SIGNAL field, and data payload encoded using OFDM or DSSS.

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        **What is the purpose of the preamble in the PPDU?**

        It helps the receiver synchronize timing and perform channel estimation.

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        **How does 802.11g maintain backward compatibility in PPDU?**

        By supporting both OFDM and DSSS/CCK modulation schemes in the PPDU.

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        **What modulation does 802.11g primarily use?**

        Orthogonal Frequency Division Multiplexing (OFDM) for high-speed data.

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        **What does the SIGNAL field indicate?**

        The data rate and length of the transmitted frame.

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        **How is error correction applied in PPDU?**

        Through convolutional coding and interleaving of the payload.

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        **What is the role of OFDM symbols in the PPDU?**

        They carry encoded data across multiple subcarriers for robustness.

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        **Are there different PPDU formats in 802.11g?**

        Yes, including OFDM and DSSS/CCK legacy formats.

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        **How does the receiver decode the PPDU?**

        It first processes the preamble, then demodulates and decodes the payload.

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        **What frequency band does 802.11g PPDU use?**

        The 2.4 GHz ISM band.

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        **Can the PPDU adapt to channel conditions?**

        Yes, by varying modulation and coding rates dynamically.

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        **What is the significance of the Service field in PPDU?**

        It provides padding and scrambling for data integrity.

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        **How does interleaving improve PPDU performance?**

        It spreads errors across symbols to enhance error correction.

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        **Does PPDU contain synchronization information?**

        Yes, in the preamble to align transmitter and receiver clocks.

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        **How large can the PPDU payload be?**

        Up to the maximum MSDU size defined by 802.11 standards.

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        **What is the typical duration of an 802.11g PPDU?**

        Varies depending on data rate and payload size, typically milliseconds.

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        **Why is PPDU critical for wireless communication?**

        It ensures data is formatted, synchronized, and encoded for reliable transmission.



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        Topics in this section,

                * :ref:`Reference links <ppdu_g_step17>`


.. _ppdu_g_step17:

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    .. tab-item:: Reference links
     
       * Reference links