A novel ranging method by code and multiple carriers of FHSS systems

Author

Cheng, Wan-Jie ; Chang, Fan-Ren

Author_Institution

Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2012

fDate

18-20 April 2012

Firstpage

1

Lastpage

6

Abstract

This paper gives a novel idea for two-way range estimation in FHSS (Frequency- Hopping Spread Spectrum) systems. The coarse measurements are obtained by the correlation computations of the PN (Pseudo-Random Noise) code. The fine measurements are obtained by the phase difference computations of a pair of carrier signals. In order to eliminate the integer ambiguities occurred in phase measurements, the frequency difference of these two selected carriers is set to the reciprocal value of the code correlation step time interval. The accuracy can be improved further if several pairs of carriers are weight -averaged according to their SNR (Signal to Noise Ratio). In our simulation, the ranging error of 1500 meters distance measurement is 0.7 meter under the condition of 6dB SNR (Signal Noise Ratio).

Keywords

mobile communication; spread spectrum communication; FHSS systems; SNR; carrier signals; coarse measurements; code correlation step time interval; frequency-hopping spread spectrum; meters distance measurement; mobile communication; multiple carriers; pseudo-random noise; ranging method; signal to noise ratio; Accuracy; Correlation; Distance measurement; Frequency measurement; Manganese; Phase measurement; Signal to noise ratio; Correlation; Frequency- Hopping; Ranging;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Telecommunications Symposium (WTS), 2012

Conference_Location

London

ISSN

1934-5070

Print_ISBN

978-1-4577-0579-3

Type

conf

DOI

10.1109/WTS.2012.6266092

Filename

6266092