Design and Implementation of Bandwidth-varying Baseband Noise Based on FPGA
Chen Yan-li · Computer & Network · 2010
This paper puts forward a baseband noise generator based on field programmable gate array(FPGA),with variable bandwiddi according to dynamic symbol rate.To show the principle structure of noise generator,the generation of Gaussian white noise,design of bandwidth-varying filter and SNR(Signal Noise Ratio) control are discussed and analyzed respectively.In the end, the simulation is designed to test the performance of baseband signal combined with the bandwidth-varying noise.And the results show that the bandwidth-varying noise generator could be used to debug or test transmission systems,symbol rate varying in 64kbps to 8192kbps.