On OFDM Ranging Accuracy in Multipath Channels

Author

Tianheng Wang ; Yuan Shen ; Mazuelas, S. ; Hyundong Shin ; Win, Moe Z.

Author_Institution

Lab. for Inf. & Decision Syst., Massachusetts Inst. of Technol., Cambridge, MA, USA

Volume

8

Issue

1

fYear

2014

fDate

Mar-14

Firstpage

104

Lastpage

114

Abstract

Wireless networks with ranging and localization capabilities enable new applications. The performance of wireless ranging depends on both the transmission technique and the propagation channel. Understanding such dependence is crucial to the design of high-accuracy ranging algorithms. In this paper, we derive the performance bounds for orthogonal frequency-division multiplexing (OFDM) ranging in multipath channels based on Fisher information analysis. In particular, we determine the equivalent Fisher information for ranging and quantify the effects of signal and channel parameters on the OFDM ranging accuracy. We also illustrate the ranging accuracy for different signal and channel parameters through numerical examples.

Keywords

OFDM modulation; multipath channels; radio networks; radiowave propagation; Fisher information analysis; OFDM ranging accuracy; multipath channels; orthogonal frequency-division multiplexing; propagation channel; transmission technique; wireless networks; Accuracy; Channel estimation; Distance measurement; Multipath channels; OFDM; Resource management; Wireless communication; Cramér–Rao bound (CRB); equivalent Fisher information (EFI); multipath channel; orthogonal frequency-division multiplexing (OFDM); ranging;

fLanguage

English

Journal_Title

Systems Journal, IEEE

Publisher

ieee

ISSN

1932-8184

Type

jour

DOI

10.1109/JSYST.2013.2260640

Filename

6623085