Dynamic Spectrum Management and Etiquette Project

 

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Spectrum Etiquette Protocol

In multi-channel ad hoc networks, spectrum resource should be efficiently utilized to accommodate communications. Current wireless LAN/PAN technologies usually use the ISM 2.4GHz band. So for different wireless devices, spectrum usage must be coordinated to reduce the interference. We propose to setup a Common Spectrum Coordination Channel (CSCC) to manage the radio resources. The proposed protocol is "policy neutral" in the sense that it can accommodate various different spectrum etiquette policies which allocate radio resources (frequency, power, time) in a fair and spectrally efficient manner. These policies (implemented as algorithms operating above the CSCC) can thus be customized to meet the needs of different application scenarios (e.g. private indoors, public outdoors, mission-critical, etc.) and regions of the world, while also making it possible to evolve with future improvements in spectrum usage algorithms.

 

Spectrum Measurements

In the spectrum measurement part, we are designing a spectrum sensor to do the measurement. The sensor includes a controller and two smart antennas. The controller includes a computer, two spectrum analyzers as well as some smart antenna digital signal processes boards. It controls two smart antennas which are located at two corners of the space respectively. By coordinating the beams of the two antennas, the spectrum sensor can make the beams of the two smart antenna intercrosses at a specific point in the space. By combining channel information basing on channel estimation, we can get the real-time power spectrum of any point in the space.

 

 

Announcement:

   Succesful Spectrum Etiquette demo for IAB meeting on May 20, 2003!
 (more about the demos...)

 

 

UPDATED: Feb. 05, 2003

 

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