TITLE:
Comparing the Performances between Adaptive Notch Filter Direct and Lattice Forms Structures for Mitigation Jamming Signals
AUTHORS:
Abdelrahman El Gebali, René Jr Landry
KEYWORDS:
CWI, MCWI, ANF, BER, IIR, QPSK, Direct and Lattice Form, and JSR
JOURNAL NAME:
Communications and Network,
Vol.14 No.3,
July
6,
2022
ABSTRACT: A jamming signal such as single and multiple
Continuous-Wave (CW and MCW) interferences have
been shown to have severe effects on the quality of the received signal in
wireless communication. This paper presents an approach of a low-complexity
algorithm that compares the performances of using Adaptive Notch Filter (ANF)
direct and lattice forms structures based on second-order
Infinite Impulse Response (IIR) Notch Filter (NF) for the detection and
mitigation of CW and MCW interferences in QPSK communication systems. The approach method consists of two ANFs, adaptive IIR NF and adaptive IIR NF .The present
algorithm can estimate and mitigate each CWI and computer their
power in Time-Domain (TD). In results for performance comparison, the lattice
IIR NF structure outperforms the direct IIR NF structure for detection and
removal jamming and has a better Bit Error Ratio (BER). Furthermore, compared
with the case of full suppression (), both cases (direct and
lattice form) work better for low and high-power jammers. Also, compared to the case without an IIR NF, the presented
algorithm can detect and mitigate, track hopping frequency interference, and
improve BER performance.