The IEEE 802.11g standard for high data rate WLANs

Vassis, Dimitris; Kormentzas, George; Rouskas, Angelos; Maglogiannis, Ilias

doi:10.1109/mnet.2005.1453395

Cited by 141 publications

(72 citation statements)

References 5 publications

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“…The test system had a universal software radio peripheral device [15] that recorded transmissions from offthe-shelf 802.11g WIFI routers [14]. The TOA of the received preamble was estimated in various locations and compared to the true TOA 1 .…”

Section: Resultsmentioning

confidence: 99%

Robust time-of-arrival estimation in multipath channels with OFDM signals

Bialer

Raphaeli

Weiss

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-Time-of-arrival (TOA) estimation of OFDM signals in multipath channels is challenging, especially when the signal bandwidth is limited, such as is the case of WIFI. In this paper, a novel low complexity TOA estimation algorithm is developed for OFDM signals that is robust to various multipath environments. We approximate the received signal as Gaussian with a proposed autocorrelation model, and then derive the Maximum Likelihood estimator with an efficient implementation algorithm. The estimator performance was tested with off-theshelf WIFI 802.11g routers. The results show that the proposed TOA estimator outperforms other known reference methods over various indoor environments.

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Section: Resultsmentioning

confidence: 99%

Robust time-of-arrival estimation in multipath channels with OFDM signals

Bialer

Raphaeli

Weiss

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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“…The 6 Mb/s has an advantage over 11 Mb/s as the preamble associated with the 802.11 OFDM rates (20 µs) is considerably shorter than the one for the 802.11b rates (96/192 µs for the short/long preamble) [6]. We can perform a simple calculation to determine if this advantage is significant; we conclude it is not.…”

Section: Practical Implications For Rate Controlmentioning

confidence: 88%

“…As the 6 Mb/s rate has a shorter preamble than the 11 Mb/s rate (20µs instead of 96 or 192µs [6]), this does not a priori mean that its throughput is always lower than that of the 11 Mb/s rate. We show, however, that the advantage conferred by the shorter preamble at 6 Mb/s is negligible when there is noise on the medium and thus the 6 Mb/s rate is effectively redundant 2 .…”

Section: Introductionmentioning

confidence: 99%

The 802.11g 11 Mb/s Rate is More Robust than 6 Mb/s

Huang

Malone

Duffy

2011

IEEE Trans. Wireless Commun.

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Abstract-The robustness to noise of the 802.11b/g 5.5 Mb/s and 11 Mb/s rates must be investigated experimentally as they cannot be predicted theoretically. In this paper we report on detailed outdoor and indoor measurements that lead us to the surprising conclusion that the 11 Mb/s 802.11g rate experiences fewer packet losses than the 6 Mb/s 802.11g rate at any given (symbol) SNR. This occurs due to the combination of modulation and physical layer coding schemes used by these rates and has serious implications for rate control algorithms. The practical implications of this, factoring in the interaction between packet loss and 802.11 MAC retries, is that 6 Mb/s is effectively redundant as a packet transmission rate if the 11 Mb/s rate is available.

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“…With Wi-Fi (802.11g) [17], the frames have a known composition as illustrated in Figure 4. The energy consumption for one packet of data can be computed with the following function: E(payload) = {P LCP preamble + (M ACheader + IP header + T CP header + payload) * ByteRate} * T ransmitP ower with IPheader, TCPheader and ByteRate known from [18] and [19] and T ransmitP ower previously measured.…”

Section: Consumption Approximation For Tcpmentioning

confidence: 99%

An Energy Efficient Layer for Event-Based Communications in Web-of-Things Frameworks

Bovet

Hennebert

2013

Lecture Notes in Electrical Engineering

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Abstract. Leveraging on the Web-of-Things (WoT) allows to standardize the access of things from an application level point of view. The protocols of the Web and especially HTTP are offering new ways to build mashups of things consisting of sensors and actuators. Two communication protocols are now emerging in the WoT domain for event-based data exchange, namely WebSockets and RESTful APIs. In this work, we motivate and demonstrate the use of a hybrid layer able to choose dynamically the most energy efficient protocol.

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The IEEE 802.11g standard for high data rate WLANs

Cited by 141 publications

References 5 publications

Robust time-of-arrival estimation in multipath channels with OFDM signals

Robust time-of-arrival estimation in multipath channels with OFDM signals

The 802.11g 11 Mb/s Rate is More Robust than 6 Mb/s

An Energy Efficient Layer for Event-Based Communications in Web-of-Things Frameworks

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