| Techreport |
| Type of Publication |
| The Impact of Forward Error Correction on Wireless Network
Performance |
| Title |
|
Effelsberg Wolfgang
|
| Authors |
| Technical Report TR-2006-05, Department of Mathematics and Computer Science,
University of Mannheim, March 2006 |
| Published in |
| In networks there are basically two methods
to tackle the problem of erroneous packets: Automatic Repeat
Requests (ARQ) and Forward Error Correction (FEC). While ARQ
means packet retransmissions, FEC uses additional bits to detect
and correct distorted data. However, extensive field test of our
sensor nodes have shown that FEC can take effect only as long as
both sender and receiver are bit-wise synchronized. Otherwise,
all following bits are misinterpreted which results in an
uncorrectable number of errors. We will thus introduce a new
resync scheme which is particularly tailored for many sensor
network platforms using UARTs in conjunction with radio
transmission. We can show that only using an appropriate resync
mechanism exploits the full potential of FEC. |
| Abstract |
|
| Projects |
|
Forward Error Correction
Resync
Wireless Sensor Networks
|
| Keywords |
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