Results 71 to 80 of about 22,220 (107)

Performance of multitone FFH/MFSK systems in the presence of jamming

IEEE Transactions on Information Theory, 1989
A novel type of diversity signaling for an M-ary frequency-shift keyed modulation format involving the transmission of multiple tones on each diversity branch is considered. The properties of such a system are investigated, and its performance in the presence of tone jamming is analyzed.
Guillermo E. Atkin, Ian F. Blake
openaire   +1 more source

Error performance analysis of FFH-MFSK with multitone jamming

Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97, 2002
An approach to computing the symbol error probability of fast frequency hopped M-ary frequency shift keying (FFH-MFSK) systems with majority vote is introduced. The error performances of an FFH-MFSK system threatened by a multitone jammer are analyzed.
Jee-Wey Wang, Jyh-Horng Wen
openaire   +1 more source

A new anti-jam receiver for MFSK/FFH system with multitone jamming

2008 11th IEEE Singapore International Conference on Communication Systems, 2008
In this paper, a differential jamming rejection (DJR) receiver in fast frequency hopping (FFH) M-ary frequency shift keying (MFSK) systems with a worst-case band multitone jamming (MTJ) is introduced. This receiver, based on detecting frequency spectrum difference in forward-backward time slot while the FFH/MFSK signal arrive receiver, implements ...
null Chen Yading, null Li Gongming, null Li Shaoqian, null Cheng Yufan   +3 more
openaire   +1 more source

Multitone Jamming Rejection of Frequency Hopped OFDM Systems in Wireless Channels

2012 IEEE Vehicular Technology Conference (VTC Fall), 2012
This work considers the bit error rate (BER) performance of orthogonal frequency division multiplexing (OFDM) frequency hopping (FH) systems in the presence of Multitone jamming (MTJ) and multipath fading. Analytical and simulation results confirmed that optimum jamming strategies require channel and signal power side information.
Arafat Al-Dweik, Abdallah Shami
openaire   +1 more source

Multitone jamming rejection of FFH/BFSK self-normalizing receiver

IEEE Military Communications Conference. Proceedings. MILCOM 98 (Cat. No.98CH36201), 2002
A computationally efficient bit-error rate (BER) expression for a fast frequency-hopped binary frequency shift-keying (FFH/BFSK) spread-spectrum (SS) communication system is derived based on Taylor-series expansion. The FFH system employs a soft-decision self-normalizing receiver against the worst-case multitone jamming (MTJ) and additive white ...
K.C. Teh, A.C. Kot, K.H. Li
openaire   +1 more source

Performance of Differential Frequency Hopping System under Multitone Jamming

2006 Asia-Pacific Conference on Communications, 2006
Differential Frequency Hopping (DFH) is a novel technique for the frequency-hopping system in HF (High Frequency) bands. The frequency transition function (FTF) and the signal detection methods are the key issues for DFH system. Symbol-by-symbol detection and sequence detection are adopted in DFH system.
Zhi Chen, Shaoqian Li, Binhong Dong
openaire   +1 more source

Performance analysis of an FFH/BFSK linear-combining receiver against multitone jamming

IEEE Communications Letters, 1998
A computationally efficient bit-error rate (BER) expression for a fast frequency-hopping binary frequency-shift-keying (FFH/BFSK) spread-spectrum system is derived based on Taylor-series expansion of the central differences. The FFH system employs a soft-decision linear-combining receiver against the worst-case band multitone jamming (MTJ) and additive
Kah Chan Teh, Kwok H. Li, Alex C. Kot
openaire   +1 more source

Performance study of a maximum-likelihood receiver for FFH/BFSK systems with multitone jamming

IEEE Transactions on Communications, 1999
We derive the optimum structure of a maximum-likelihood (ML) receiver for a fast frequency-hopped binary frequency-shift-keying (FFH/BFSK) spread-spectrum (SS) communication system operating in the presence of multitone jamming (MTJ) and additive white Gaussian noise (AWGN). It is shown that the side information of noise variance, signal tone amplitude,
Kah Chan Teh, Alex C. Kot, Kwok H. Li
openaire   +2 more sources

Anti-Jam Performance of Fast Frequency Hopped MFSK with Coding against Worst-Case Multitone Jamming

MILCOM 1987 - IEEE Military Communications Conference - Crisis Communications: The Promise and Reality, 1987
Fast frequency hopped (FFH) MFSK with coding can significantly improve anti-jam (AJ) performance against partial band jamming. Multitone (MT) jamming has been shown to be the most effective partial band jamming technique, particularly against higher order M-ary FSK modulation.
B. H. Tanaka, R. L. Yuan
openaire   +1 more source

Optimization of a hybrid SFH/DS MFSK link in the presence of worst case multitone jamming

IEEE Transactions on Communications, 1995
The performance of a hybrid slow frequency hopped direct sequence multiple frequency shift keyed (SFH/DS MFSK) communication link in the presence of partial band multitone jamming is considered. The communication signal is characterized by a DS-spread MFSK signal bandwidth that may exceed the FH slot spacing, and the signal consists of multiple M-ary ...
Maureen A. Laxpati, Jeffrey W. Gluck
openaire   +2 more sources