Title :
A new Half-overlap Filtered Multitone Modulation based on CIC filter in the context of Cognitive Radio
Author :
Liu, Xugang ; Liu, Hao
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., UESTC, Chengdu, China
Abstract :
In this paper, an analysis of multicarrier (MC) communication technique in the context of Cognitive Radio is realized. The features of alternative modulation based on filter bank-non-overlap and Half-overlap subchannel Filtered MultiTone (FMT) will be mentioned. However, half-overlap FMT system proposed in [6] introduces intercarrier interference (ICI) due to the loss of orthogonality which may reduce system performance. In order to keep subcarriers orthogonal and thereby eliminate ICI, an improved Half-overlap FMT system with orthogonal subcarriers based on cascaded integrator-comb (CIC) filter will be proposed and a comparison will be conducted. Both the simulation and measure results show that the proposed modulation technique is a good candidate for Cognitive Radio.
Keywords :
channel bank filters; cognitive radio; comb filters; intercarrier interference; modulation; CIC filter; cascaded integrator-comb filter; cognitive radio; filter bank-non-overlap; half-overlap filtered multitone modulation; intercarrier interference; multicarrier communication; Chromium; Cognitive radio; Communications technology; Context; Digital filters; Digital modulation; Filter bank; Interference; Laboratories; OFDM; CIC filter; Half-overlap FMT; cognitive radio; filter bank; interference; sidelobe;
Conference_Titel :
E-Health Networking, Digital Ecosystems and Technologies (EDT), 2010 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-5514-0
DOI :
10.1109/EDT.2010.5496585