Antijamming Capacity and Performance Analysis of Multiple Access Spread Spectrum Systems in AWGN and Fading Environments

Nikjah, Reza; Beaulieu, N.C.

doi:10.1109/icc.2006.255484

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…When frequency repetition is present in the system, full-band jamming causes more damage than partial-band jamming, and a jammer optimizing its parameters using the bound will switch from a full-time, full-band jamming strategy to a partial-time, full-band jamming strategy as the K-factor of the channel increases. This result is consistent with research on fast frequency-hopped spread-spectrum systems, such as [12] and [16], and is consistent with results in [8], where frequency repetition is always used.…”

Section: ) Theoretical Results and Simulation Results Comparisonsupporting

confidence: 92%

Multicarrier DS-CDMA System Under Fast Rician Fading and Partial-Time Partial-Band Jamming

Cosman

Milstein

2019

IEEE Trans. Commun.

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The impact of joint partial-time, partial-band jamming on a multicarrier (MC) asynchronous direct-sequence code-division multiple access (DS-CDMA) system in a fast fading environment is studied in conjunction with two different subcarrier combining and decoding schemes. An easy-to-evaluate upper bound using the Chernoff bound is provided and compared to simulation results. Simulation results suggest that for soft-decision decoding systems, under Rayleigh fading, full-time, full-band jamming is most effective. In contrast to the Rayleigh case, when a sufficiently strong line-of-sight component exists in the channel, the jammer's optimal strategy of attacking in time or frequency depends on the strength and the type of error correction that the system is deploying for that dimension. For hard-decision decoding systems, in Rayleigh fading, partial-band jamming is recommended. For the coding strategies examined, in Rician fading, the jammer should switch from full-time, partial-band jamming to a strategy that jams a higher percentage of the more heavily protected dimension as the jamming power increases. Furthermore, for AWGN channels, the results from the system show that the jammer should always jam a higher percentage of the more heavily protected dimension. Index Terms-Code division multiaccess, multipath channels, rician channels, jamming. I. INTRODUCTION D IFFERENT realizations of multitone direct-sequence code-division multiple access (DS-CDMA) and multicarrier (MC) DS-CDMA systems have been proposed and their performances have been analyzed in many publications [1]-[8]. It is well-known that DS-CDMA systems are vulnerable to partial-time jamming [9], [10], and in [11], [12] it can be seen that, depending on the design, multicarrier systems can be vulnerable to partial-band jamming. In this paper, we focus on the performance of the MC-DS-CDMA system described in [1] under joint partial-time, partial-band jamming. The performance of DS-CDMA systems undergoing a jamming attack has been studied extensively for the single carrier case. In [9], [13], [14] the performance of coded

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Section: ) Theoretical Results and Simulation Results Comparisonsupporting

confidence: 92%

Multicarrier DS-CDMA System Under Fast Rician Fading and Partial-Time Partial-Band Jamming

Cosman

Milstein

2019

IEEE Trans. Commun.

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“…The jamming signal, denoted by J(t), is a stationary zero mean complex Gaussian process active on a fraction ρ of the signal bandwidth. The assumption of Gaussian jamming signal is considered in several articles as [5][6][7].…”

Section: System Modelmentioning

confidence: 99%

Jamming Impact on the Performance of MIMO Space Time Block Coding Systems over Multi-path Fading Channel

Shaheen

Samir

2013

REV-JEC

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The combined effect of broad/partial band jamming on the analysis performance of multi-input/multi-output (MIMO) space time block coding (STBC) systems over Rayleigh fading channel is often neglected in the literature. To this end, this paper investigates the impact of different kinds of jamming on the performance of MIMO STBC systems. Closed form expressions for the bit error probability (BEP) of the performance of binary phase shift keying (BPSK) STBC communication system over Rayleigh fading channel under the impact of both partial band and broad-band jamming for different number of transmitting and receiving antennas are presented. Computer simulations are provided to validate the theoretical developments. It has been found that the performance of such systems is severely deteriorated in the presence of strong jamming power (with a signal to jamming power ratio less than − 10dB) and the worst scenario occurs in the presence of broad-band jamming.

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Multiple tone interference of multicarrier frequency-hopping BPSK system for a Rayleigh fading channel with channel estimation errors

El-Mahdy

2010

Digital Signal Processing

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Antijamming Capacity and Performance Analysis of Multiple Access Spread Spectrum Systems in AWGN and Fading Environments

Cited by 9 publications

References 16 publications

Multicarrier DS-CDMA System Under Fast Rician Fading and Partial-Time Partial-Band Jamming

Multicarrier DS-CDMA System Under Fast Rician Fading and Partial-Time Partial-Band Jamming

Jamming Impact on the Performance of MIMO Space Time Block Coding Systems over Multi-path Fading Channel

Multiple tone interference of multicarrier frequency-hopping BPSK system for a Rayleigh fading channel with channel estimation errors

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