Title :
Cognitive radio with relay of a primary signal and piggyback modulation
Author :
Naganawa, Jun ; Yamazato, Takaya ; Katayama, Masaaki
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Nagoya Univ., Nagoya, Japan
Abstract :
This manuscript proposes a cognitive radio system that shares a frequency with an existing primary system. In the proposed method, a secondary transmitter relays the primary signal and piggybacks its own data on it. Symbol error probabilities of the system are derived analytically. The result shows that the proposed system can communicate at a relatively high speed on the same frequency of the primary system without harm to it.
Keywords :
cognitive radio; modulation; radio transmitters; signal processing; cognitive radio; piggyback modulation; primary signal; transmitter relays; Cognitive radio; Computer science; Condition monitoring; Error probability; Frequency; Interference; Pulse modulation; Radio transmitters; Relays; White spaces;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
DOI :
10.1109/PIMRC.2009.5450056