Posts Tagged Hardware

Building a HTPC with Intel Atom and NVIDIA ION

Posted by on Saturday, 14 January, 2012

Some time ago I wrote about building a NAS with Ubuntu Server on the Intel Atom platform. This nifty little processor, when combined with NVIDIA ION, can easily be used to build a full-fledged HTPC. Read the rest of this entry »

Upgrading Ubuntu Server to 11.10 using SSH

Posted by on Friday, 28 October, 2011

About half a year ago I wrote about Upgrading Ubuntu 10.04 using SSH. I did the same thing when 11.10 (Oneiric Ocelot) was released. And with great success! Read the rest of this entry »

Wrong duration of SlotTime in IEEE 802.11p in NS-2 / NS-3

Posted by on Wednesday, 20 April, 2011

IEEE 802.11p is designed for use in the V2V / V2I context. It uses an OFDM physical layer largely based on IEEE 802.11a. Some values are directly reused, others are modified. The slottime (often denoted with the Greek ‘sigma’ or aSlotTime) is one of those values which are unclear.

As a result, NS-2 and NS-3 erroneously use a wrong 802.11p slotTime of 13 microseconds. Scientific works using these simulators should carefully check sensitivity to this bug – results may be off!
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NAS: Ubuntu Server on Intel ATOM

Posted by on Saturday, 12 February, 2011

Time to attach some storage to your home network! I used to have a web / samba server for over five years running Slackware at first but Ubuntu since version 4.04. Given the noise and energy consumption I got rid of the large server system and decided to go for a more energy-efficient solution: a NAS. Read the rest of this entry »

Kinesis Freestyle keyboard – no more RSI

Posted by on Monday, 7 February, 2011

In a period when I had to do a lot of keyboard work (which is basically always, come to think of it…) I was showing the first signs of Repetitive Strain Injury, or RSI in short. Getting a new keyboard solved the problems for me.
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