@ author: Xiaohui Liu
@ created: 1/5/2012
@ description:
|-- CMAC: C-MAC protocol
|-- Commander: used for test sync of ftsp 
|-- ERCCA: use CCA to decide exclusion region
|-- Matlab: analysis code in Matlab
|-- RIDBNoOLAMA: RIDB protocol with original LAMA, not ONAMA
|-- RTSCTS: CSMA RTS-CTS protocol
|-- SignalMap: signal map
|-- SyncRoot: test ftsp sync
|-- TestFtsp: driver of testing ftsp
|-- TestSM: driver of testing signal map
|-- TestiMAC: main driver
|-- cc2420x_test: driver of testing cc2420x after bug fix
|-- iMAC_CSMA: CSMA protocol
|-- iMAC_TDMA: our PRKS protocol
|-- iMAC_bak: evolved versions of PRKS
|-- router: multihop relay component
|-- slot_len: calibrate slot length
|-- log.txt: revision logs