Sponsored by the Important National Science and Technology Specific Projects( Grant No. 2012ZX03004003);the National Natural Science Foundation of China( Grant No. 61171110)
The MAC protocol design for wireless sensor networks has been researched and developed for decades. SMAC protocol is a famous energy-efficient MAC protocol. Based on SMAC protocol, we find that the boundary nodes in t...
Sponsored by the National Natural Science Foundation General Program of China(Grant No.61171110)
A hybrid carrier (HC) DS CDMA communication system is proposed, combining 4-weighted fractional Fourier transform (4-WFRFT) with code division multiple access (CDMA) technique. The signals are modulated in a certain o...