Proceedings ArticleDOI
IEEE 802.11ac: Enhancements for very high throughput WLANs
Eng Hwee Ong,Jarkko Kneckt,Olli Alanen,Zheng Chang,Toni Huovinen,Timo Nihtila +5 more
- pp 849-853
TLDR
This paper introduces the key mandatory and optional PHY features, as well as the MAC enhancements of 802.11ac over the existing802.11n standard in the evolution towards higher data rates, and demonstrates that hybrid A-MSDU/A-MPDU aggregation yields the best performance for both 802.Abstract:
The IEEE 802.11ac is an emerging very high throughput (VHT) WLAN standard that could achieve PHY data rates of close to 7 Gbps for the 5 GHz band. In this paper, we introduce the key mandatory and optional PHY features, as well as the MAC enhancements of 802.11ac over the existing 802.11n standard in the evolution towards higher data rates. Through numerical analysis and simulations, we compare the MAC performance between 802.11ac and 802.11n over three different frame aggregation mechanisms, viz., aggregate MAC service data unit (A-MSDU), aggregate MAC protocol data unit (A-MPDU), and hybrid A-MSDU/A-MPDU aggregation. Our results indicate that 802.11ac with a configuration of 80MHz and single (two) spatial stream(s) outperforms 802.11n with a configuration of 40 MHz and two spatial streams in terms of maximum throughput by 28% (84%). In addition, we demonstrate that hybrid A-MSDU/A-MPDU aggregation yields the best performance for both 802.11n and 802.11ac devices, and its improvement is a function of the maximum A-MSDU size.read more
Citations
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System performance of LTE and IEEE 802.11 coexisting on a shared frequency band
Timo Nihtila,Vitaliy Tykhomyrov,Olli Alanen,Mikko A. Uusitalo,Antti Sorri,Martti Moisio,Sassan Iraji,Rapeepat Ratasuk,Nitin Mangalvedhe +8 more
TL;DR: The system performance analysis of 3GPP Long-Term Evolution (LTE) and IEEE 802.11 Wireless Local Area Networks (WLAN) in a situation where LTE downlink has been expanded over to unlicensed frequency band usually used by WLAN is presented.
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Filter Bank Multicarrier Modulation: A Waveform Candidate for 5G and Beyond
TL;DR: A broad review of the research work done in the wireless laboratory of the University of Utah in the past 15 years is presented and a number of appealing features of FBMC waveforms are brought up that make them an ideal choice in the emerging areas of multiuser and massive MIMO networks.
References
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GSM, GPRS and EDGE Performance: Evolution Toward 3G/UMTS
TL;DR: In this article, the authors discuss the key parts of both ETSI GSM and 3GPP/GERAN standards and propose a totally new approach for Radio Access Network automated optimization.