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#1 2010-May-13 03:01:13

Ahmad Amr
Member
From: Nile University - Egypt
Registered: 2010-Mar-22
Posts: 36

Ethernet link speed

Folks,

i know that the Ethernet link speed ranges from 10Mb to 100Mb.
although this not the actual rate i see when deal with WARP.
when we transfer the samples from the radio buffer (2^14) to MATLAB it takes about 1.3 sec.
which means that the actual transmission is approximately 1Mb !!!

so i wanna know where is the problem ? or why ?
if this issue related to the MATLAB interfacing ,can we write C code (exe file) to read the data from the kit then do the processing later ?


thanks,

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#2 2010-May-13 03:32:54

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: Ethernet link speed

WARPLab uses UDP over IP over Ethernet, the overhead of which will always limit the throughput to lower than the line rate. The current WARPLab reference design uses a custom version of xilnet, a very simple IP stack from Xilinx that was not designed to maximize throughput (it was designed to be simple). The WARPLab reference design benchmarks detail how long each action for a Tx/Rx cycle.

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