Cognitive Radio Air Interface key Technology
The paper describes three basic components being able Cognitive radio: Frequency, Modulation and Power. Frequency is located in 3.1 GHz~10.6 GHz so that the system can sufficiently utilize spectrum resource and UWB communications channel. OFDM in UWB communications is extensively used to mitigate multi-path interference. QPSK and DCM modulation are used to map binary data on signal wave shape on subcarriers. The most promised problem is emission power mask level to reduce interference to primary users. Cognitive Radio that operates in the holes of licensed spectrum could transmit the same level power as license wireless communications.
CR frequency modulation power
Jin Tian Guangguo Bi
National Mobile Communications Research Laboratory,Southeast University2 Sipailou, Nanjing, China, 2 National Mobile Communications Research Laboratory, Southeast University 2 Sipailou, Nanjing, China,
国际会议
第一届软件无线电技术研讨会(ist International Software Ridio Technology Workshop)
北京
英文
1-4
2008-10-16（万方平台首次上网日期，不代表论文的发表时间）