Research Article

Acknowledgement Corruption: A New Aspect of Physical Layer Capture in IEEE 802.11 Networks

Table 4

Comparison of the merged traffic trace and system-provided statistics (802.11n).

ā€‰MCS index Positions 1, 4 Positions 2, 4 Positions 3, 4
Near Far Near Far Near Far Near Far

802.11n (two spatial streams) 14 9 86.52% 99.87% - - - -
13 9 99.80% 99.88% - - - -
12 9 99.94% 99.90% 92.03% 99.76% - -
11 9 99.83% 99.83% 99.68% 99.78% 96.75% 92.97%
9 8 99.95% 99.81% 99.93% 99.76% 99.95% 99.13%

802.11n (one spatial stream) 7 3 99.64% 99.91% - - - -
6 3 99.89% 99.89% 99.83% 99.87% - -
4 2 99.98% 99.89% 99.96% 99.82% 99.94% 99.88%
3 1 99.91%99.81% 99.94% 99.8% 99.92% 99.87%
3 3 99.95%99.88% 99.96% 99.67% 99.87% 99.49%
1 3 99.92%99.90% 99.93% 99.81% 99.91% 99.89%