Research on anti-jamming and anti-interception performance of MC-CDMA system based on Code-Hopping
نویسندگان
چکیده
Abstract In the wireless channel environment, there are all kinds of jamming. With wide application OFDM Technology in communication system, technology signal analysis is becoming more and mature. Pure exposed no longer safe, facing risk jamming interception, especially military field. Multi-carrier Code Division Multiple Access (MC-CDMA) what combines characteristics CDMA. It has advantages system CDMA at same time. reduces transmission rate improves reliability. Compared with MC-CDMA better BER performance SNR environment. Based on single user model simulation carried out, comparison out. above work, theory code hopping spread spectrum introduced to design a new based MC-CDMA, anti-jamming anti interception analyzed.
منابع مشابه
Cryptographic CDMA code hopping (CH-CDMA) for signal security and anti-jamming
Today, military and commercial Spread Spectrum and CDMA transmission systems argue with security on the physical layer based on the secrecy of the seed values of static secure (and insecure) pseudorandom noise generators (PRNG). This should prevent eavesdropping and jamming [1, 2]. Confidentiality, data integrity and authenticity are usually realized in higher protocol layers [3]. Nevertheless,...
متن کاملSimulation of Anti-Jamming Technology in Frequency-Hopping Communication System
Frequency-hopping communication is widely used in the field of military communication, which has the capability to resist interference. In frequency-hopping system, narrowband interference signals exist in partial dehopping frequency-hopping signals, equivalent to time-varying interference signals existed in the frequency-hopping signals. Through integrating the diversity combining with singula...
متن کاملAnti-Jamming Message-Driven Frequency Hopping - Part I: System Design
This is Part I of a two-part paper that considers antijamming system design in wireless networks based on messagedriven frequency hopping (MDFH), a highly efficient spread spectrum technique. In this paper, we first analyze the performance of MDFH under hostile jamming. It is observed that while MDFH is robust under strong jamming, it experiences considerable performance losses under disguised ...
متن کاملA Spectrally Efficient Anti-Jamming Technique Based on Message Driven Frequency Hopping
This paper considers spectrally efficient anti-jamming system design based on message-driven frequency hopping (MDFH). Unlike conventional FH where the hopping frequencies are determined by a preselected pseudonoise (PN) sequence, in MDFH, part of the message acts as the PN sequence for carrier frequency selection. It is observed that MDFH has high spectral efficiency and is particularly robust...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of physics
سال: 2021
ISSN: ['0022-3700', '1747-3721', '0368-3508', '1747-3713']
DOI: https://doi.org/10.1088/1742-6596/1920/1/012046