Performance Evaluation of OFDM Based Cognitive Radio System with Wiener Filter Channel Estimation Using Frequency Hopping GSM Channel Model at 900 MHz

Author

Budiarjo, I. ; Nikookar, H. ; Ligthart, L.P.

Author_Institution

Delft Univ. of Technol., Delft

fYear

2007

fDate

8-10 Oct. 2007

Firstpage

74

Lastpage

77

Abstract

The 900 MHz band (GSM band) is one of the highly occupied spectrum band. In this paper the access to such spectrum by the Cognitive Radio (CR) system using frequency hopping as a dynamic method of spectrum utilization is suggested. OFDM as an efficient modulation scheme is used, and the frame design according to the bluetooth TDD frame is considered. OFDM CR transmission over 900 MHz GSM band with frequency hopping in urban area and rural areas are simulated. The BER performances with 1-D Wiener Filter and 2times1-D channel estimation in the short packet frame (Bluetooth TDD frame) are evaluated. The results show how effective is frequency hopping CR OFDM transmission in 900 MHz GSM band.

Keywords

OFDM modulation; Wiener filters; channel estimation; cognitive radio; error statistics; BER; OFDM; Wiener filter; bandwidth 900 MHz; bluetooth TDD frame; channel estimation; cognitive radio system; frequency hopping GSM channel model; spectrum utilization; Bit error rate; Bluetooth; Channel estimation; Chromium; Cognitive radio; Frequency estimation; GSM; OFDM modulation; Urban areas; Wiener filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Technologies, 2007 European Conference on

Conference_Location

Munich

Print_ISBN

978-2-87487-003-3

Type

conf

DOI

10.1109/ECWT.2007.4403949

Filename

4403949