Interference Mitigation in IEEE 802.11G OFDM Systems with Smart Antennas and Tapped Delay Lines

Author

Al-Banna, Ayham Z. ; LoCicero, Joseph L. ; Ucci, Donald R.

Author_Institution

ECE Dept., Illinois Inst. of Technol., Chicago, IL

fYear

2006

fDate

23-25 Oct. 2006

Firstpage

1

Lastpage

7

Abstract

In an 802.11 wireless environment, signals that use orthogonal frequency division multiplexing (OFDM) and OFDM with cyclic prefix code (OFDM-CPC) present interference to other wireless users. This work thoroughly analyzes the interference these signals cause and contrasts the results to that of narrow band interferers. Smart antennas with tapped-delay-lines are used to mitigate the interference effect from these signals. The optimal values for the delay lines parameters (number of taps and amount of delay provided by each delay unit) to restore the performance at minimum cost are found

Keywords

OFDM modulation; adaptive antenna arrays; cyclic codes; delay lines; interference suppression; IEEE 802.11g OFDM system; cyclic prefix code; delay lines; interference mitigation; orthogonal frequency division multiplexing; smart antenna; Adaptive arrays; Antenna arrays; Communication system security; Degradation; Delay lines; Interference; Narrowband; OFDM; Signal analysis; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 2006. MILCOM 2006. IEEE

Conference_Location

Washington, DC

Print_ISBN

1-4244-0617-X

Electronic_ISBN

1-4244-0618-8

Type

conf

DOI

10.1109/MILCOM.2006.302489

Filename

4086381