Alvarion BreezeNET DS.11 User Manual page 97

What is the best value for the CW win parameter on the DS.11?
Setting the CW win parameter to 31 for heavy bi-directional traffic loads will
minimize the PER. Setting the CW win to 15 will improve performance for more
uni-directional traffic loads. CW win 7 should only be used for short range point-
to-point links, and 63 should be used for large, long range multi-point links.
BreezeNET BU-DS.11/RB-DS.11 C-7
Appendix C. DS.11 FAQ
User's Guide