Hello fellows, I´ve been working some time ago on the maximum throughput you can get from an XO on it´s wireless and I got some interesting results, on which I still have to work but I would like to share with you to know if I´m trying to invent the wile again. But first the conditions, I´ve been using an XO 1.0 with Q2E35 firmware and image 801, the distance to the AP is less than 3m and the noise lv -91dBm.
Now the interesting part, the test and the data. Basically what I did was measure the throughput that a XO can reach using for this the iperf. I configured an AP in order to only admit the maximum rate (11Mbps) from 802.11b and everything went ok, the max throughput achieved was 5,9 Mbps when the max thr with a 1500 Bytes package size is 6,3 Mbps. Now comes the interesting, when I did the same with 802.11g setting the rate at 54 Mbps te XO reached 14,5 Mbps which belongs to a 24Mbps rate, so I tried to do the same in that rate but the throughput was 10.0 Mbps. During the measures I watched the connection rate on the XO and was the proper one. My theory (and yet to check by package capture ) is that the maximum size package is not getting above 600 bytes. I did the math and plotted throughput vs package size for different rates and the results are congruent with my theory. After making some captures I´ll tell you. Bye -- Andres Nacelle Plan Ceibal - Investigación y Desarrollo Avda. Italia 6201 Montevideo - Uruguay. Tel.: 601 57 73 Int. 213 E-mail : [email protected]
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