Table C-2: Spanning Factors And Hopping Sequences For Sequences With 7 To - Alvarion BreezeACCESS 900 System Manual

Appendix C - Configuring Hopping Frequencies and Operational Sequences
Valid values: 1 to Number of Hopping Frequencies minus 1, provided it
meets the GCD requirement as described above.
It is not recommended to use spanning factors of 1 and N-1, as they
result in hopping on consecutive channel (assuming that the available
channels are consecutive). In these cases the advantage of using
frequency hopping is not fully utilized, since narrow band interference
may affect several consecutive hops. Spanning factors of 2 and N-2 also
result in a relatively poor spread of the hopping frequencies over the
available frequency band.
Default Value: 1
NOTE
During the association process, the SU learns the Scrambling Mode (and the
Spanning Factor if applicable) of the AU. If the Scrambling Mode of the AU is
different from the one configured for the SU, than after completing the
association process the SU will use the Scrambling Mode of the AU.
Table C-2 displays the available spanning factors and corresponding
hopping sequences for 7 to 12 channels. The recommended spanning
factors are highlighted (shaded background).
Table C-2: Spanning Factors and Hopping Sequences
Number of Channels
7
8
C-6
for Sequences with 7 to 12 Channels
Spanning Factor Hopping Sequence
1 1, 2, 3, 4, 5, 6, 7
2 1, 3, 5, 7, 2, 4, 6
3 1, 4, 7, 3, 6, 2, 5
4 1, 5, 2, 6, 3, 7, 4
5 1, 6, 4, 2, 7, 5, 3
6 1, 7, 6, 5, 4, 3, 2,
1 1, 2, 3, 4, 5, 6, 7, 8
3 1, 4, 7, 2, 5, 8, 3, 6
5 1, 6, 3, 8, 5, 2, 7, 4
7 1, 8, 7, 6, 5, 4, 3, 2,
BreezeACCESSS 900 System Manual