Title :
The probe spectrum access method
Author_Institution :
Shared Spectrum Co., Vienna, VA
Abstract :
This paper describes the probe spectrum access method. This dynamic spectrum access method can be used in the TV band to enable a system to transmit at high power levels (>1 W) without causing harmful interference. Each "Frequency Agile Radio" (FAR) transceiver measures the background spectrum to identify potential available channels. The system uses a high-processing gain probe waveform that enables propagation measurements to be made with minimal interference to the non-cooperative users. The system uses a modulation method to identify the FAR signal to all non-cooperative users via on/off amplitude modulation, allowing easy resolution of interference claims. Other TV band spectrum access methods do not enable high transmit power levels (>1 W) without causing interference to the existing users
Keywords :
amplitude modulation; broadcast channels; frequency agility; radio spectrum management; radiofrequency interference; radiowave propagation; signal resolution; telecommunication channels; transceivers; FAR transceiver; TV band; dynamic spectrum access method; frequency agile radio; high-processing gain probe waveform; minimal interference; noncooperative user; on-off amplitude modulation; power transmission; probe spectrum access method; propagation measurement; signal interference; signal resolution; telecommunication channel; Amplitude modulation; Broadcasting; Frequency; Probes; Propagation losses; Springs; TV interference; Transceivers; Transmitters; Uncertainty;
Conference_Titel :
New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005. 2005 First IEEE International Symposium on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-4244-0013-9
DOI :
10.1109/DYSPAN.2005.1542651
