Title :
Energy efficiency of MIMO transmissions in wireless sensor networks with diversity and multiplexing gains
Author :
Liu, Wenyu ; Li, Xiaohua ; Chen, Mo
Author_Institution :
Personal Commun. Sector, Motorola Inc., Libertyville, IL, USA
Abstract :
The energy efficiency of MIMO transmissions in wireless sensor networks is analyzed considering the trade-off between diversity and multiplexing gains. Various MIMO are studied with noncooperative, half-cooperative or cooperative realizations. Energies consumed in transmission, processing circuitry and cooperation are obtained, which show that the optimal energy efficiency requires both the diversity and the multiplexing gains be exploited.
Keywords :
MIMO systems; array signal processing; diversity reception; multiplexing; power consumption; wireless sensor networks; MIMO transmissions; cooperative realization; diversity; energy efficiency; half-cooperative realization; multiplexing gains; noncooperative realization; optimal energy efficiency; wireless sensor networks; Antenna arrays; Circuits; Diversity methods; Energy consumption; Energy efficiency; Intelligent networks; MIMO; Receiving antennas; Sensor arrays; Wireless sensor networks;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1416154
