Multi-input-multi-output antennas for radio frequency identification systems
Bansal, Shivali G. and Abawajy, Jemal 2012, Multi-input-multi-output antennas for radio frequency identification systems, in Chipless and conventional radio frequency identification : systems for ubiquitous tagging, IGI Global, United States, pp.96-127.
Attached Files
(Some files may be inaccessible until you login with your Deakin Research Online credentials)
Name
Description
MIMEType
Size
Downloads
Title
Multi-input-multi-output antennas for radio frequency identification systems
In this chapter the authors discuss the physical insight of the role of wireless communication in RFID systems. In this respect, this chapter gives a brief introduction on the wireless communication model followed by various communication schemes. The chapter also discusses various channel impairments and the statistical modeling of fading channels based on the environment in which the RFID tag and reader may be present. The chapter deals with the fact that the signal attenuations can be dealt with up to some level by using multiple antennas at the reader transmitter and receiver to improve the performance. Thus, this chapter discusses the use of transmit diversity at the reader transmitter to transmit multiple copies of the signal. Following the above, the use of receiver combining techniques are discussed, which shows how the multiple copies of the signal arriving at the reader receiver from the tag are combined to reduce the effects of fading. The chapter then discusses various modulation techniques required to modulate the signal before transmitting over the channel. It then presents a few channel estimation algorithms, according to which, by estimating the channel state information of the channel paths through which transmission takes place, performance of the wireless system can be further increased. Finally, the Antenna selection techniques are presented, which further helps in improving the system performance.
ISBN
9781466616165 1466616164 9781466616172
Language
eng
Field of Research
080501 Distributed and Grid Systems
Socio Economic Objective
970108 Expanding Knowledge in the Information and Computing Sciences