Title :
Exploiting macrodiversity in dense multihop networks and relay channels
Author :
Valenti, Matthew C. ; Correal, Neiyer
Author_Institution :
Lane Dept. Comput. Sci. & Electr. Eng., West Virginia Univ., Morgantown, WV, USA
Abstract :
Embedded networks of sensors and actuators must operate at extremely low power and use inexpensive single-antenna transceivers. The economics of such systems preclude the use of complex signal processing or antenna arrays at any one device. However, the same economics allows the coverage area to be blanketed with a high density of devices, which results in a rich spatial diversity. This spatial diversity can be exploited by forming a virtual antenna array, which combines observations made at multiple receivers. This paper illustrates the potential transmit energy savings that are possible by using such macrodiversity-combining approaches by the analysis and simulation of an idealized system. It concludes by discussing practical issues that must be considered before integrating macrodiversity-combining strategies into actual embedded networks.
Keywords :
ad hoc networks; antenna arrays; diversity reception; radio repeaters; transceivers; wireless sensor networks; actuator network; complex signal processing; dense multihop network; devices density; embedded network; low power operation; macrodiversity; multiple receivers; relay channel; sensor network; single-antenna transceiver; spatial diversity; system economics; transmit energy saving; virtual antenna arrays; Actuators; Antenna arrays; Array signal processing; Power generation economics; Power system economics; Power system relaying; Receiving antennas; Relays; Spread spectrum communication; Transceivers;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200673