Improvement in active interference cancellation technique using guard carriers in MB-OFDM UWB system

Author

Kumar, Ravindra ; Tyagi, Akhilesh

Author_Institution

Dept. of Electron. & Commun. Eng, Indian Inst. of Technol. Roorkee, Roorkee, India

fYear

2013

fDate

12-14 Dec. 2013

Firstpage

487

Lastpage

489

Abstract

In 2002, FCC has allocated a wide band (3.1-10.6 GHz) of spectrum to UWB systems which can be used without licence but there are some narrowband system already operating in the same frequency band. In order to coexist with existing systems, multiband-OFDM systems should have cognitive radio capabilities to detect and avoid interference to primary user (PU). Active interference cancellation technique is very effective technique to mitigate interference to narrowband systems. In this paper improvement in AIC is proposed by utilizing guard carriers. A notch gain of around 8dB over conventional AIC scheme is achieved.

Keywords

OFDM modulation; cognitive radio; interference suppression; ultra wideband communication; AIC; FCC; MB-OFDM UWB system; UWB systems; active interference cancellation technique; cognitive radio capabilities; frequency 3.1 GHz to 10.6 GHz; guard carriers; multiband-OFDM systems; narrowband system; notch gain; primary user; Cognitive radio; FCC; Interference cancellation; Narrowband; OFDM; Radio spectrum management; Active Interference Cancellation; Cognitive Radio; Guard Carriers; MB-OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communication (ICSC), 2013 International Conference on

Conference_Location

Noida

Print_ISBN

978-1-4799-1605-4

Type

conf

DOI

10.1109/ICSPCom.2013.6719840

Filename

6719840