Research on synchronization technology of frequency hopping communication system

Zhao, Xi; Quan, Houde; Pei-zhang, Cui

doi:10.1063/1.5039025

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…In a serial search acquisition method, the received spreading PN sequence used at the transmitter is correlated with the one that is used at the receiver and periodically delayed until a set threshold is attained. Once this threshold is attained, acquisition is declared and the declaration of acquisition initiates tracking [11].…”

Section: Issn 2286-2455mentioning

confidence: 99%

Design of Code Acquisition Method of FHSS System

Abdulhamid

Ogwali

2019

The Scientific Bulletin of Electrical Engineering Faculty

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Frequency hopping spread spectrum (FHSS) communication systems offer significant performance advantages in view of their low probability of intercept, improved performance in multipath fading environments and their ability to avoid interference by hopping into low interference frequency channels. For the transmitted sequence to be correctly received and demodulated, the frequency hop sequence used at the receiver should be similar to that employed in the transmitter. Code acquisition infrequency hopping attempts to address this problem by providing a frequency hop pattern at the receiver that is nearly identical to that used at the transmitter. Code acquisition brings the alignment between the transmitter and the receiver hop pattern to at least one hop period. The main objective of this paper is to design and demonstrate a FHSS code acquisition method. The type of channel used is Additive White Gaussian Noise (AWGN).

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Section: Issn 2286-2455mentioning

confidence: 99%

Design of Code Acquisition Method of FHSS System

Abdulhamid

Ogwali

2019

The Scientific Bulletin of Electrical Engineering Faculty

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“…the PN sequence to at least within a time period of the PN sequence used to generate the carrier frequency at the receiver. Code tracking involves further refi ning the acquired PN sequence improving its accuracy to less than half the time period of the transmitted signal [7,8].…”

Section: Serial Search Code Acquisition Of Fhss Systemmentioning

confidence: 99%

Serial search code acquisition of FHSS system

AL-Rawi

2019

IRASE

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Frequency hopping spread spectrum (FHSS) communication systems offer significant performance advantages in view of their low probability of intercept, improved performance in multipath fading environments and their ability to avoid interference by hopping into low interference frequency channels. For the transmitted sequence to be correctly received and demodulated, the frequency hop sequence used at the receiver should be similar to that employed in the transmitter. Code acquisition in frequency hopping attempts to address this problem by providing a frequency hop pattern at the receiver that is nearly identical to that used at the transmitter. Code acquisition brings the alignment between the transmitter and the receiver hop pattern to at least one hop period. In this paper, the serial search code acquisition, which is the first step of synchronization, is studied for frequency hopping spread spectrum (HFSS) system over Rayleigh fading channel. Simulation results show the effect of fading channel on the code acquisition.

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“…The paper concentrates on demonstrating a means of code tracking on Frequency Hopping Spread Spectrum (FHSS) systems. The tracking deals with correction of timing offsets and frequency offsets of the clock running the code generators [7]. Although acquisition is an essential first step before tracking can commence, there is no in depth treatment of acquisition methods.…”

Section: Introductionmentioning

confidence: 99%

Study of the tracking of FHSS signal over AWGN channel

AL-Rawi

2020

International Review of Applied Sciences and Engineering

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Frequency Hopping Spread Spectrum (FHSS) communications utilizes a pseudo random code to spread the bandwidth of the data being transmitted over a much wider range than is required by the data. Due to the pseudo random nature of the carriers selected for transmission, the spreading and dispreading process must occur simultaneously to recover the transmitted data signal. This requires the receiver have knowledge about the instant the transmitter began transmitting and the propagation delay between the two. However, in real world systems, this information is unavailable to the receiver. The paper utilizes MATLAB Simulink to demonstrate a method of synchronizing the code clock at the receiver with the code clock at the transmitter. This fine alignment process is known as code tracking.

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Research on synchronization technology of frequency hopping communication system

Cited by 5 publications

References 29 publications

Design of Code Acquisition Method of FHSS System

Design of Code Acquisition Method of FHSS System

Serial search code acquisition of FHSS system

Study of the tracking of FHSS signal over AWGN channel

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