Title :
A Spectrum Exchange Mechanism in Cognitive Radio Contexts
Author :
Han, Chuan ; Wang, Jun ; Li, Shaoqian
Author_Institution :
Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
In cognitive radio (CR) contexts, the available spectrum holes between the CR transmitter and receiver may be dynamically varying. Therefore, an important issue for CR application is the coordination of available spectrum at the transmitter and receiver before and during the process of information transmission. In this paper, we address this problem by proposing a signaling mechanism. Our scheme includes both the initial link establishment algorithm and dynamic link maintenance mechanism. We also propose the interleaved OFDM-based transform domain communication system as a promising candidate for the initial access signaling transmission by comparing with currently available modulation schemes. Simulation results of the proposed access link establishment mechanism are also presented to evaluate its feasibility
Keywords :
OFDM modulation; radio links; telecommunication signalling; OFDM; access link establishment mechanism; cognitive radio contexts; dynamic link maintenance mechanism; initial link establishment algorithm; receiver; signaling mechanism; spectrum exchange mechanism; transform domain communication system; transmitter; AWGN; Chromium; Cognitive radio; Context; Interference; Mobile communication; OFDM; Radio transmitters; Receivers; Resource management;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
1-4244-0329-4
Electronic_ISBN :
1-4244-0330-8
DOI :
10.1109/PIMRC.2006.254366