partial usage of subchannel.
The mapping of bursts into subframes can be done using different permutation schemes such as partial usage of subcarriers (PUSC) and full usage of subcarriers (FUSC).
WiMAX OFDMA standard specifies several subcarrier permutation options, such as the partial usage of subcarriers (PUSC), full usage of subcarrier (FUSC), and the band adaptive modulation and coding (band-AMC) among others, for mapping the physical subcarriers into logical subchannels assigned to users by the BS schedulers.
We should stress, that the performance gain is also achieved with partial usage of the weak HSI channel.
The partial usage of subcarriers (PUSC) permutation mode is also used in both UL and DL directions.
IEEE 802.16 systems define multiple zones where each zone is able to support PUSC (partial usage of subcarriers), FUSC (full usage of subcarriers), and AMC (adaptive modulation and coding) modes, as shown in Figure 4.
Three basic kinds of subcarrier allocation schemes, partial usage of subchannel (PUSC), full usage of subchannel (FUSC), and adaptive modulation and coding (AMC), are defined in IEEE 802.16 [3, 4].
In other words, the presence of problem solving methods is couple with partial usage of any ontology for any single agent.
Here, we observe two of the possible configurations: the downlink partial usage of subcarriers (DL-PUSC) and the adaptive modulation and coding (AMC23).
As an example, Figure 1 shows the configuration of the IEEE 802.16e downlink-partial usage of sub-channels (DL-PUSC).
