Network Software Radio

Software radio is a kind of new communication technology developped in recent 10 years iIt over comes some disadvantage of common radio technology, such as the bad compatibility, dificulty of upgrading, etc. ?There are two kinds of realization method: one is to depend on DSP and FPGA to conform the digital signals processing part of the system; the other is to use the universal PC working station groups to deal with the signalso The experiment platform of software radio is based on the later,, There are two functions of the platform: one is the transmmition of voice ^ fax and data, the other is the realization of the translation and communication of the different patterns. We discuss the thearies of some problems in this article, such as the high speed AD structure, the direct waveform composing, etc. ?Running a kind of predigested CDMA pattern on the platformo...