Title :
Cooperative transmissions in wireless sensor networks with imperfect synchronization
Author :
Li, Xiaohua Edward ; Chen, Mo ; Liu, Wenyu
Author_Institution :
Dept. of Electr. & Comput. Eng., State Univ. of New York, Binghamton, NY, USA
Abstract :
STBC-encoded cooperative transmission is studied in a typical wireless sensor network communication protocol LEACH (low-energy adaptive clustering hierarchy). The effect of imperfect synchronization among cooperative sensors is studied and a new STBC encoding scheme is proposed when asynchronism becomes significant Cooperation overhead and energy efficiency are analyzed. The analysis and simulation results demonstrate that cooperative transmission is promising in wireless sensor networks in spite of the increased cost of synchronization and circuitry energy consumption.
Keywords :
block codes; protocols; space-time codes; synchronisation; wireless sensor networks; LEACH; STBC; asynchronism; circuitry energy consumption; communication protocol; encoded cooperative transmission; energy efficiency; imperfect synchronization; low-energy adaptive clustering hierarchy; space-time block code; wireless sensor network; Antenna arrays; Circuits; Energy consumption; Energy efficiency; Frequency synchronization; Intelligent networks; Scheduling; Transmitters; Transmitting antennas; Wireless sensor networks;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399348
