Concatenated coding for frequency-hop packet radio

Chiasson, G.M.; Pursley, M.B.

doi:10.1109/milcom.1991.258465

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…If the number of orthogonal tones within the hopping band is , then the fraction of tones jammed is . Define the dehopped signal band is jammed , and we have (3) Only the worst-case [5] is considered in this paper. Note that the above equation uses an assumption mentioned before: the candidate message bands are uniformly and nonoverlapped spaced.…”

Section: System Description and Definitionsmentioning

confidence: 99%

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Antijam capability analysis of RS-coded slow frequency-hopped systems

Jeng

2000

IEEE Trans. Commun.

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The application of Reed-Solomon codes in slow frequency-hopped systems has been extensively studied. Earlier investigations assumed an infinite interleaving length and considered partial-band noise jammers only. This paper extends previous efforts by analyzing the effect of finite interleaving length and the impact of band multitone jammers. We also explain why two-threshold (2T) erasure-insertion methods (EIM) are needed and examine their performance. Numerical results are presented to compare the effectiveness of EIM's and jammer types and to study the relationships among the hop rate, the interleaver size, and the code rate. The use of 2T EIM's necessitates the estimation of several additional channel and signal parameters. Simple and effective estimation algorithms are provided as well. Index Terms-Errors-and-erasures decoding, frequency-hop, jamming, RS code. I. INTRODUCTION A FAST frequency-hopped (FFH) system employs both frequency and time diversity and enjoys the advantage of having a "coding gain." On the other hand, to acquire a satisfactory antijam (AJ) capability, a slow frequency-hopped (SFH) system usually has to add an extra mechanism of protection-that is where forward error-control (FEC) coding comes into play. Stark [1] compared the performance among repetition codes, convolutional codes, and Reed-Solomon (RS) codes for SFH systems.-ary frequency-shift keying (MFSK) or differential phase-shift keying (DPSK) are two practical modulation schemes that most frequently go with RS-coded FH signals. An excellent review of the application of RS codes to SFH/MFSK systems can be found in [10]. Side information, which offers the information about the received symbol's reliability, can help increase the error-correcting capability of a given code. Stark [1] showed that the use of binary side information about the presence of a jammer to determine whether a received symbol should be erased can enhance the error-control capability of RS codes. Hagenauer and Lutz [4] used channel state and erasure information derived from received waveform's amplitude to improve the performance of a mobile satellite system. In [6], test symbols were utilized as a reference of symbol reliability in various

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Section: System Description and Definitionsmentioning

confidence: 99%

“…Substituting (6) into (5), we obtain 7In case BMTJ ( ) instead of PBNJ is present, the associated has the same expression with replaced by defined in (3). For EE decoding, , and for errors-only (EO) decoding, .…”

Section: Decoder Performance Analysismentioning

confidence: 99%

Antijam capability analysis of RS-coded slow frequency-hopped systems

Jeng

2000

IEEE Trans. Commun.

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“…[1] 둘째는 연접 부호 기법으로 도약 홉 사이의 다이버시티(diversity)를 확보한다. [2] 마지 막은 소실 삽입 기법(erasure insertion method, EIM)…”

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The Higher-Order-Modulated Slow-Frequency-Hopping Spread-Spectrum System over AWGN under Partial-Band Jamming

Ahn¹,

Kim²,

No³

et al. 2017

The Journal of Korean Institute of Communications and Informati

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In this paper, we propose a new EIM(erasure insertion method) based on the average-minimal-noise-power for HOM(higher order modulation) over AWGN(additive white Gaussian noise) under PBJ(partial-band jamming).Then we design SFH/SS(slow-frequency-hopping spread-spectrum) system by applying this method and formulate the PER(packet error rate) of the system. Based on this formula, we propose a new method to set the optimal threshold of the EIM and verify it at the designed 16-QAM SFH/SS system.

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Erasure insertion in frequency-hop communications with fading and partial-band interference

Baum

Pursley²

1997

IEEE Trans. Veh. Technol.

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Concatenated coding for frequency-hop packet radio

Cited by 9 publications

References 6 publications

Antijam capability analysis of RS-coded slow frequency-hopped systems

Antijam capability analysis of RS-coded slow frequency-hopped systems

The Higher-Order-Modulated Slow-Frequency-Hopping Spread-Spectrum System over AWGN under Partial-Band Jamming

Erasure insertion in frequency-hop communications with fading and partial-band interference

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