An improved channel detection method for IEEE 802.11N MIMO system

Autor:	Zhi Fang, Yin Shi, Haifang Jian, Xiaocheng Yao
Rok vydání:	2011
Předmět:	IEEE 802 Computer science business.industry Interoperability MIMO Electrical engineering Systems design Sense (electronics) Electrical and Electronic Engineering MIMO-OFDM business Energy (signal processing) Communication channel
Zdroj:	Journal of Electronics (China). 28:658-663
ISSN:	1993-0615 0217-9822
DOI:	10.1007/s11767-012-0788-9
Popis:	Coexistence and interoperability between 20 MHz and 40 MHz device and modes of operations are stressed in standard IEEE 802.11n system. It is mandate to report the both sub-channels states to Medium Access Control (MAC) at receiver, since for 40 MHz device, it should serve not only 20 MHz but also 40 MHz signals receiving. Both energy detection and carrier sense are employed to detect channel state. In the case of 20/40 M mode, the power difference between the two sub-channels is also detected in order to report the channel state accurately. The simulation results demonstrate that the performance of the proposed methods are much better than the methods which just employ energy detection. Besides, the simulation results show that the proposed methods ensure that the channel sensing is not a roadblock of IEEE 802.11n system design.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c2d39ed9f3b29acb920038c08e51ea74 https://doi.org/10.1007/s11767-012-0788-9 Zobrazit plný text záznamu Full text from SpringerLink