A modified algorithm of Ricean Factor K estimation for L-DACS1 system

Author

Peifei Xing ; Tao Zhang ; Xiangyu Zeng

Author_Institution

Sch. of Electron. & Inf. Eng., Beihang Univ., Beijing, China

fYear

2013

fDate

29-31 Oct. 2013

Firstpage

6

Lastpage

10

Abstract

One deployment option for future civil air-ground broadband communication named L-band Digital Aeronautical Communications System 1 is proposed by International Civil Aviation Organization and earlier drafted by German Aerospace Research Center. Besides the serious time selective fading for channel, interference originating from Distance Measure Equipment (DME) operating in adjacent channels in L-band has a strong impact on t Ricean factor K estimation. This paper proposed a modified algorithm of Ricean Factor K estimation based on OFDM pilot and virtual sub-carrier, which mitigate the impact of interference of DME to Ricean Factor K estimation, and the algorithm improve the estimation precision of Ricean Factor K in the case of low signal-to-noise ratio (SNR). The results of simulation show that performance of the algorithm is much superior to the moment-based estimation algorithm on the condition that SNR is 3dB-5dB.

Keywords

OFDM modulation; Rician channels; aircraft communication; broadband networks; digital communication; interference suppression; DME; L-DACS1 system; L-band digital aeronautical communications system 1; OFDM pilot; SNR; civil air-ground broadband communication; distance measure equipment; interference mitigation; low signal-to-noise ratio; modified algorithm; moment-based estimation algorithm; serious time selective channel fading; t-Ricean factor K estimation; virtual subcarrier; Broadband communication; Channel estimation; Estimation; Interference; OFDM; Signal to noise ratio; OFDM pilot; Ricean factor K estimation; moment estimation; virtual sub-carrier;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE), 2013 IEEE 5th International Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4673-6077-7

Type

conf

DOI

10.1109/MAPE.2013.6689945

Filename

6689945