Извините, этот техт доступен только в “Американский Английский”. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language.
CHANNEL ESTIMATION FIELD DESIGN FOR THE SINGLE CARRIER MODULATION IN IEEE 802.11AY
Yaroslav Gagiev, Radio Gigabit LLC, Nizhny Novgorod, Russia, yaroslav.gagiev@radiogigabit.com
Anastasia Aderkina, Radio Gigabit LLC, Nizhny Novgorod, Russia, anastasia.aderkina@radiogigabit.com
Abstract
This paper describes structure of a channel estimation field for the single carrier (SC) modulation based on the IEEE 802.11ad standard supporting transmission of radio signals between devices with multiple antennas for transmission and reception (MIMO — Multiple Input Multiple Output). Channel estimation field design uses a developed set of reference sequences based on complementary Golay pairs having similar statistical characteristics. All sequences are orthogonal to each other and each complementary pair has a pair in the set with zero cross-correlation property between them. Usage of this property allows to cancel out interstream interference during channel estimation procedure. A key property of the developed set is a common hardware architecture for a generator and correlator. Proposed structure of the channel estimation field is flexible and can be extended to arbitrary number of spatial streams for transmission. To analyze influence of the proposed channel estimation field on system performance, dependence of packet error rate on signal to noise ratio (SNR) was simulated for MIMO configuration with two transmit and two receive antennas for real and ideal channel estimations. System performance is analyzed in two channel models: the line of sight channel and the Rayleigh channel corresponding to the best and worst case of the signal propagation. It was shown that degradation of the SNR operating points depending on a modulation-coding scheme is in range 0.6-1.1 dB for the line of sight channel model and 0.7-1.5 dB for the Rayleigh channel model. This solution is already adopted by the IEEE 802.11ay standardization group.
Keywords: channel estimation field; Golay sequences; single carrier modulation; MIMO; IEEE 802.11ay.
References
1. 802.11 WG – Wireless LAN Working Group. (2012). IEEE Std. 802.11ad-2012: IEEE standard for information technology — Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements – Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications – Amendment 3: Enhancements for very high throughput in the 60 GHz band. [online]. Available: https://standards.ieee.org/standard/802_11ad-2012.html
2. Task Group ad, (2009). IEEE 802.11 TGad Usage model [online]. IEEE 802.11-2009/0583r0. [Viewed 1 October 2020]. Available: https://mentor.ieee.org/802.11/dcn/09/11-09-0583-00-00ad-tgad-usage-model.ppt
3. Corporate Author, (2016). Wireless Gigabit (WiGig) Market Size To Reach $7.42 Billion By 2024 [online], Grand View Research. [Viewed 30 September 2020]. Available: https://www.grandviewresearch.com/press-release/global-wireless-gigabit-wigig-market
4. Rappaport, T., Heath, Jr. R., Daniels, R. and Murdock, J., (2015). Millimeter wave wireless communications. Prentice Hall.
5. Nitsche, T., Cordeiro, C., Flores, A. B. and Knightly, E. W. (2014). IEEE 802.11ad: directional 60 GHz communication for multi-Gigabit-per-second Wi-Fi. IEEE Communications Magazine [online]. 52(12). 132-141. [Viewed 1 October 2020]. Available: doi: 10.1109/MCOM.2014.6979964.
6. 802.11 WG — Wireless LAN Working Group. (2019). IEEE Std. P802.11ay-2019: IEEE standard for information technology — Telecommunications and information exchange between systems — Local and metropolitan area networks – Specific requirements – Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications – Amendment 7: Enhanced throughput for operation in 16 license-exempt bands above 45 GHz. [online]. Available: https://standards.ieee.org/project/802_11ay.html
7. Task Group ay, (2017). IEEE 802.11 TGay Usage Scenarios. [online]. IEEE 802.11-2015/0625r7. [Viewed 1 October 2020]. Available: https://mentor.ieee.org/802.11/dcn/15/11-15-0625-07-00ay-ieee-802-11-tgay-usage-scenarios.pptx
8. Golay, M. (1961). Complementary series. IRE Transactions on Information Theory [online]. 7(2). 82-87. [Viewed 1 October 2020]. Available: doi: 10.1109/TIT.1961.1057620.
9. Budisin, S.Z. (1991). Efficient pulse compressor for Golay complementary sequences. Electronics Letters [online]. 27(3). 219-220. [Viewed 1 October 2020]. Available: doi: 10.1049/el:19910142
10. Guan, X., Zhang, Ch. and Jin, D. (2013). High-speed structure of channel estimation and equalization for 60 GHz SC-FDE transmission. 2013 International Conference on Computational Problem-Solving (ICCP), 26-28 October 2013, Jiuzhai, China. [online]. Institute of Electrical and Electronics Engineers. pp. 211-214. [Viewed 1 October 2020]. Available: doi: 10.1109/ICCPS.2013.6893577.
11. Task Group ay, (2016). IEEE 802.11 Specification Framework for TGay. [online]. IEEE 802.11-2015/1258r9. [Viewed 1 October 2020]. Available: https://mentor.ieee.org/802.11/dcn/15/11-15-1358-09-00ay-specification-framework-for-tgay.doc
12. Meyr, H., Moeneclaey, M. and Fechtel, S. A., (1997). Digital Communication Receivers: Synchronization, Channel Estimation, and Signal Processing. 1st Edition. Wiley-Interscience.
Information about authors:
Yaroslav Gagiev, Senior Research Engineer, Radio Gigabit LLC, Nizhny Novgorod, Russia
Anastasia Aderkina, Research Engineer, Radio Gigabit LLC, Nizhny Novgorod, Russia