What technologies does the IEEE 802.11n wireless standard use to achieve data rates as high as 600 Mbps?

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Multiple Choice

What technologies does the IEEE 802.11n wireless standard use to achieve data rates as high as 600 Mbps?

Explanation:
The idea being tested is how 802.11n increases throughput by using multiple antennas to carry data in parallel. 802.11n achieves higher speeds by employing MIMO (multiple input, multiple output) at both ends of the link and using spatial multiplexing to transmit several independent data streams at once over the same wireless channel. This parallelism is what drives the large jump in data rate—when enough streams are used (for example, four) along with wider channels and capable modulation, peak rates around 600 Mbps become possible. OFDM is part of the modulation scheme that carries these streams, but it’s the combination of multiple antennas and the ability to send multiple data streams in parallel that truly enables the 600 Mbps capability. A single antenna cannot achieve that level, and simply noting MIMO without referring to multiplexing wouldn’t capture how those parallel streams are actually delivered.

The idea being tested is how 802.11n increases throughput by using multiple antennas to carry data in parallel. 802.11n achieves higher speeds by employing MIMO (multiple input, multiple output) at both ends of the link and using spatial multiplexing to transmit several independent data streams at once over the same wireless channel. This parallelism is what drives the large jump in data rate—when enough streams are used (for example, four) along with wider channels and capable modulation, peak rates around 600 Mbps become possible. OFDM is part of the modulation scheme that carries these streams, but it’s the combination of multiple antennas and the ability to send multiple data streams in parallel that truly enables the 600 Mbps capability. A single antenna cannot achieve that level, and simply noting MIMO without referring to multiplexing wouldn’t capture how those parallel streams are actually delivered.

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