Symbol timing synchronization for IEEE 802.11n WLAN systems

Cho, Misuk; Jung, Yunho; Kim, Jaeseok

doi:10.1109/ahici.2009.5340303

Cited by 14 publications

(3 citation statements)

References 13 publications

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“…However, the influence factors on the synchronization [39], including the time needed for processing each packet, the transmitted time from transmitter to the receiver, the offset of the received signal, etc, are dependent on the hardware processing and the channel conditions. Thus, the latter four IJSs are more applicable in practical scenario with loose requirements on the synchronization.…”

Section: Remarksmentioning

confidence: 99%

An Intermittent Cooperative Jamming Strategy for Securing Energy-Constrained Networks

Gao

Huo

Jing

et al. 2019

IEEE Trans. Commun.

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The Internet-of-Things (IoT) emerges as a paradigm to achieve ubiquitous connectivity via wireless communications between kinds of physical objects. Due to the wireless broadcasting nature and the energy constraint of physical objects, concerns on IoT security have triggered research on cooperative jamming based physical layer security. With the help of a cooperative jammer, existing solutions can effectively fight against eavesdroppers. However, these schemes are of high energy cost due to continuously transmitting jamming signals. To reduce the energy consumption, we propose a new idea of intermittent jamming and design five specific intermittent jamming schemes (IJSs). By taking the transmit frame formate into account, we optimize these IJSs from three aspects, including the jamming power, the jamming method, and the jamming positions. Then we analyze the applicability of the proposed IJSs according to different requirements on the synchronization, the available jamming energy and the jamming power constraints. Extensive MATLAB experiments are conducted on the basis of the WLAN Toolbox, which demonstrate the proposed IJSs can effectively degrade the reception of the eavesdropper and outperform the widespread continuous jamming scheme (CJS) when the available jamming energy is limited.

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Section: Remarksmentioning

confidence: 99%

An Intermittent Cooperative Jamming Strategy for Securing Energy-Constrained Networks

Gao

Huo

Jing

et al. 2019

IEEE Trans. Commun.

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“…The improvement of the capacity with FS in the IEEE 802.11n system lies on the selection of the sampling point [7], [8]. In the conventional MIMO system, the timing synchronization is carried out in terms of the received signals sampled at the baud rate [9][10][11]. In timing synchronization, the synchronization point is selected with peak detection at the output of the correlator.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of IEEE802.11n Reception with Fractional Sampling

Nakamura¹,

Inamori²,

Sanada³

2011

Proceedings of the 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

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In the IEEE802.11n WLAN standard, orthogonal frequency division multiplexing (OFDM) modulation is employed. Diversity techniques are implemented to overcome multipath fading in the OFDM systems. A fractional sampling (FS) scheme is one of the diversity techniques with a single antenna. This scheme can also be applied in a MIMO-OFDM system to increase its capacity. In this paper, the effect of FS in a WLAN system following the IEEE802.11n standard is investigated through experiments. Numerical results through the experiments indicate that diversity gain through FS can be obtained in the NLOS conditions.

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“…To avoid beamforming in IEEE 802.11n the system is introduced with cyclic delay diversity CSD scheme. The side effect of this technique may produce pseudo multipath peak detection in MIMO Wlan after cross-correlation [3]. The received signal at one or more than one receiver antennas is the sum of all the transmitted signals through multipath fading channel.…”

Section: Mimo Pseudo-path Errormentioning

confidence: 99%

IEEE802.11n Time Synchronization for MIMO OFDM WLAN

Ali¹,

Mahmood²,

Imran³

et al. 2013

IJCCE

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Abstract-In this paper, a reference time synchronization method [1] is adopted with introduced changed and improved fine and refined time estimation step. The communication system on which it is tested is MIMO OFDM based wireless local area network system. The WLAN standard adopted is of IEEE 802.11n, each data packet starts with a preamble, which consists of short as well as long training symbols. Simulation is implemented with C++ eclipse and tested for AWGN, Exponential Rayleigh Decaying and TGN fading channels. The plots generated by the simulation clearly show the improved performance of the introduced scheme.

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Symbol timing synchronization for IEEE 802.11n WLAN systems

Cited by 14 publications

References 13 publications

An Intermittent Cooperative Jamming Strategy for Securing Energy-Constrained Networks

An Intermittent Cooperative Jamming Strategy for Securing Energy-Constrained Networks

Experimental Investigation of IEEE802.11n Reception with Fractional Sampling

IEEE802.11n Time Synchronization for MIMO OFDM WLAN

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