MUOS U2B Interference Mitigation Analysis

Author

Bahr, Randall K. ; Lee, David K.

Author_Institution

General Dynamics C4 Systems, Scottsdale, AZ

fYear

2007

fDate

29-31 Oct. 2007

Firstpage

1

Lastpage

7

Abstract

This paper analyzes the effects on signal-to-noise ratio (SNR) caused by undesired interference within the user-to-base (U2B) MUOS spectrum, and the spectral modifications of the WCDMA waveform designed to combat such interference. Spectral modifications consist of waveform whitening and notching, and are applied to improve performance in the presence of background UHF interference, legacy interferers, and Multiple Access Interference (MAI). Spectral whitening applied at the MUOS receiver mitigates interference by reducing interference power at the demodulator, at a small loss of desired signal power. SNR degradation may be further reduced by applying the spectral whitening calculated at the receiver to the transmitted signal. This technique improves performance by concentrating transmitted power in spectral locations known to be free of interference.

Keywords

AWGN; Additive white noise; Cause effect analysis; Degradation; Filter bank; Gaussian noise; Multiaccess communication; Multiple access interference; Narrowband; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 2007. MILCOM 2007. IEEE

Conference_Location

Orlando, FL, USA

Print_ISBN

978-1-4244-1513-7

Electronic_ISBN

978-1-4244-1513-7

Type

conf

DOI

10.1109/MILCOM.2007.4455291

Filename

4455291