Which of the following spread spectrum techniques were used in the original IEEE 802.11 standard?(a) FHSS and DSSS(b) THSS and FHSS(c) THSS and DSSS(d) Hybrid techniqueI had been asked this question in examination.I want to ask this question from Wireless Local Area Networks (WLANs) topic in chapter Modern Wireless Communication Systems of Wireless/Mobile

Which of the following spread spectrum techniques were used in the ori

1.	Which of the following spread spectrum techniques were used in the original IEEE 802.11 standard?(a) FHSS and DSSS(b) THSS and FHSS(c) THSS and DSSS(d) Hybrid techniqueI had been asked this question in examination.I want to ask this question from Wireless Local Area Networks (WLANs) topic in chapter Modern Wireless Communication Systems of Wireless/Mobile
Answer» The correct answer is (a) FHSS and DSSS To ELABORATE: ORIGINAL IEEE 802.11 used both the approaches of FHSS (Frequency Hopping Spread Spectrum) and DSSS (Direct SEQUENCE Spread Spectrum). But from LATE 2001s, only DSSS modems are used within IEEE 802.11.

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