Great wifi repeater/extender reference

Reference links
http://superuser.com/questions/418876/please-help-me-understand-wds-and-roaming
http://superuser.com/questions/586901/does-a-wi-fi-range-extender-create-a-separate-network
- very good answer to clear the confusion out of the difference between repeater and extender
http://madwifi-project.org/wiki/UserDocs/UsersGuideExamples
- madwifi guide
http://wiki.openwrt.org/doc/howto/clientmode
- Cient mode wireless. Some methods/topologies.
http://www.smallnetbuilder.com/wireless/wireless-howto/32246-how-we-test-wireless-extenders
- How do we test wireless extender
http://www.tomshardware.com/forum/42033-43-wifi-repeater-setup-operation
http://www.tomshardware.com/answers/id-1628116/wifi-repeater-signal-problem.html#.
http://forum.arduino.cc/index.php/topic,178730.0.html

wifi repeater reference installation guide

Reference links
http://www.hkepc.com/forum/viewthread.php?tid=1947533
- gives out a real-product installation guide that we can refer to