Title :
Spectral signatures and interference of 802.11 Wi-Fi signals with Barker code spreading
Author :
Lee, Taeri ; Al-Banna, Ayham ; Zhou, Xiaoguang ; LoCicero, Joseph ; Ucci, Donald
Author_Institution :
Electr. & Comput. Eng. Dept., Illinois Inst. of Technol., Chicago, IL
Abstract :
This paper characterizes interference in 802.11 Wireless Fidelity (Wi-Fi) systems that utilize Barker codes as spreading sequences. Particularly, detailed spectral analyses are performed. These studies result in exact power spectral densities (PSDs) for 1 Mbps and 2 Mbps signaling schemes that define their spectral signatures. Investigation of the leakage of interference power into adjacent 802.11 channels, which can be useful for the deployment of cognitive radios, is presented The theoretical and computer simulation results for the Wi-Fi signal PSDs are verified through experimental measurements and emulation
Keywords :
adjacent channel interference; cognitive systems; sequential codes; signal processing; software radio; spectral analysis; telecommunication signalling; telecommunication standards; wireless LAN; 1 Mbit/s; 2 Mbit/s; 802.11 standard; PSD; Wi-Fi signal; adjacent channel interference; barker code spreading sequence; cognitive radio; power spectral density; signaling scheme; spectral signature; wireless fidelity; Cognitive radio; Communication system security; Defense industry; Electromagnetic radiative interference; FCC; Interchannel interference; Personal digital assistants; Radio frequency; Spectral analysis; Telecommunication network reliability;
Conference_Titel :
New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005. 2005 First IEEE International Symposium on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-4244-0013-9
DOI :
10.1109/DYSPAN.2005.1542693
