Changes between Version 33 and Version 34 of Manual/Scenario/CRS


Ignore:
Timestamp:
06/25/14 14:46:14 (3 years ago)
Author:
jean-philippe
Comment:

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  • Manual/Scenario/CRS

    v33 v34  
    55Cognitive radio is a new technology which is being developed to bring greater efficiency, speed and reliability to users of wireless devices.  The number of high powered wireless devices coming on to the market is increasing exponentially placing an unprecedented demand on the limited radio spectrum.  Cognitive radio technology is seen as a potential solution to this problem as it identifies unused frequencies in a local area and switches a device to this temporarily to provide users with uninterrupted and faster mobile services.  
    66[[BR]][[BR]] 
    7 The '''[raw-attachment:"STG(11)12rev1 - SEAMCAT Cognitive Radio manual (STG(10)41rev10).pdf" Manual on Cognitive Radio Simulation]''' (3.5 MB) has been developed to aid technical studies into this new technology.  The manual sets out how SEAMCAT can be used for spectrum sensing where the interfering devices (It) try to detect the presence of protected services (e.g. the Wt) transmitting in each of the potentially available channels. 
     7The '''[raw-attachment:"STG(11)12rev2 - SEAMCAT Cognitive Radio manual (STG(10)41rev10).pdf" Manual on Cognitive Radio Simulation]''' (3.5 MB) has been developed to aid technical studies into this new technology.  The manual sets out how SEAMCAT can be used for spectrum sensing where the interfering devices (It) try to detect the presence of protected services (e.g. the Wt) transmitting in each of the potentially available channels. 
    88[[BR]][[BR]] 
    99Spectrum sensing essentially involves conducting a measurement within a candidate channel to determine whether any protected service is present and transmitting.  When a channel is determined to be vacant, sensing is typically applied to adjacent channels to  identify what constraints there might be on transmission power, if any.