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pravin_sloka
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re: Rethink traditional development and test when deploying 802.11ac
pravin_sloka   7/14/2012 5:55:53 AM
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Thank you for the clarification.

IxiaPR
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re: Rethink traditional development and test when deploying 802.11ac
IxiaPR   7/13/2012 11:15:38 PM
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We apologize for the inconvenience. pravin_sloka is correct the paragraph should read: "To increase the physical-layer transport rate, 802.11ac makes use of a higher rate encoding scheme known as 256-QAM. This scheme can transmit 33% more data as the 64-QAM used in the 802.11n standard."

CMathas
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re: Rethink traditional development and test when deploying 802.11ac
CMathas   7/13/2012 12:47:53 PM
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I've passed your question on to the author--stay tuned!

pravin_sloka
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re: Rethink traditional development and test when deploying 802.11ac
pravin_sloka   7/13/2012 6:09:37 AM
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"To increase the physical-layer transport rate, 802.11ac makes use of a higher rate encoding scheme known as 256-QAM. This scheme can transmit four times as much data as the 64-QAM used in the 802.11n standard." How can the data rate be 4x when the modulation scheme is just changed from 64-QAM to 256-QAM? 64-QAM serves 6 bits per carrier while 256-QAM does 8 bits. Thus the improvement in throughput due to 256-QAM is only 2/6 = 33% more compared to 802.11n.



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