Information Technology Reference
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Figure 5. Throughput for all data packets.
With 10 hops (Figure 7) the relative performance among the packets begins to stabilize.
The AUX1 packet only has the higher efficiency for channel conditions above 30 dB. For
approximately 30 dB the AUX2 packet becomes the best. The adaptive scheme ADP2 has the
best efficiency when the SNR is close to 20 dB and the BCH packet is the best for SNR
below 15 dB. It can be noted that when the channel quality is good, it is not necessary a very
powerful error correction and the AUX1 and AUX2 packets can be utilized. If the channel
conditions are very bad, a code able to correct many errors has to be used, so the BCH packet
is the most recommended in such situations. For intermediary conditions, the adaptive
schemes ADP1 and ADP2 have the best energy efficiency degree. This behavior of the
different error control strategies is approximately the same for 25 hops (Figure 8) [7].
Figure 6. Energy efficiency for 1 hop.
