So, to make radio monitoring receivers by ourselves has important significance to the development of our country’s communication technology. The receivers must sell discount wedding dresses accords with our national condition, with independent intellectual property, update conveniently and with low costThe development of software radio solves the problems that the traditional analog receiver can not solve. Radio receivers based on software radio can blog lace wedding dresses monitor in wide-band, high speed and complicated electromagnetic environment. The receivers have the characteristic of high-compatibility. The development of software radio made the study of digital receiver with higher-speed, wider-band, higher-compatibility and more conveniently characteristic becoming possible. There has been many high performance digital radio receivers based on new shoes 2010 software radio soled in the radio monitoring market. But, in our country, the development of digital radio monitoring receivers is nearly at the starting stage.The paper realized some key functions in the digital receivers that based on software radio. Baseband demodulation, ITU measurement and spectrum analysis discount wedding dresses are implemented in the paper. The paper introduces the demodulation process of amplitude modulation, frequency modulation, phase modulation signals in detail. Also, the paper realized the measurement of some signal characteristics suggested by ITU such as modulation depth, frequency deviation cheap evening dresses and signal-occupancy-bandwidth. At the end of the paper, spectrum analysis for RF signals was implemented. During the process of baseband demodulation of FM signal, the rule of phase fuzzy was found and the ambiguity resolution was exposed.
http://www.presentationhelper.co.uk/Forum
http://www.trekportal.it/tpforum
http://forum.eindexamens.nu
http://forum.joomla.ch
http://www.gerodot.ru
http://jwong91.spaces.live.com/default.aspx
http://nweogn.spaces.live.com/default.aspx
http://nweong13.spaces.live.com/default.aspx
http://tweng1988.spaces.live.com/default.aspx
http://neowgn.spaces.live.com/default.aspx
