Abstract
In this paper, adaptive serial acquisition schemes are proposed using threshold optimization in Multisensor data fusion for mobile communication systems in frequency selective Rayleigh fading channel. Two distributed adaptive detectors based on ordered statistics constant false alarm rate (OSCFAR) and censored mean level detector (CMLD) are used. For threshold optimization, the Particle Swarm Optimization (PSO) with linearly decreasing strategy is suggested, employing two logical fusion rules to enhance the serial-search in a multipath environment. The acquisition and detection performances are investigated under different system parameters and channel condition, namely the number of distributed sensors, the partial correlation length, the number of resolvable path and the effect of fading. Simulation results shown the robustness of the proposed distributed adaptive acquisition CMLD processor using PSO over the one based on OSCFAR. Moreover, the benefit of proposed schemes over adaptive acquisition ones using one antenna is also investigated by simulation.
Abbreviations
- PSO:
-
Particle swarm optimization
- CMLD:
-
Censoring mean level detector
- OSCFAR:
-
Order statistic constant false alarm rate
- OSAP:
-
Order statistic acquisition processor
- AAP:
-
Adaptive acquisition processor
- SOCFAR:
-
Smallest of constant false alarm rate
- GOCFAR:
-
Greatest of constant false alarm rate
- ACAP:
-
Automatic censoring acquisition processor
- CACFAR:
-
Cell averaging constant false alarm rate
- FAHAP:
-
Fuzzy adaptive hybrid acquisition processor
- MIP:
-
Multipath intensity profile
- MGF:
-
Moment generating function
- AWGN:
-
Additive white Gaussian noise
- SNR:
-
Signal to noise ratio
- pdf:
-
Probability density function
- Res:
-
The residue
- BPSK:
-
Binary phase shift keying
- FIR:
-
Finite impulse response
- DS-CDMA:
-
Discrete spreading code division multiple access
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An erratum to this article is available at http://dx.doi.org/10.1007/s11277-016-3724-8.
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Doudou, F.Z., Djebbari, A. Particle Swarm Optimization Aided Serial Acquisition in Distributed OSCFAR and CMLD for DS-CDMA Systems in Fading Channels. Wireless Pers Commun 94, 621–640 (2017). https://doi.org/10.1007/s11277-016-3640-y
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DOI: https://doi.org/10.1007/s11277-016-3640-y